Electrostatic MDCAT MCQs for Students

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Electrostatic MDCAT MCQs. We covered all the Electrostatic MDCAT MCQs in this post for free so that you can practice well for the exam.

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MCQ on Electrostatic MDCAT Students

The area of each plate of a parallel plate capacitor is 100 cm² and the distance between the plates is 1 mm. It is filled with mica of dielectric constant 6. The radius of the equivalent capacity of the sphere will be

Given a number of capacitors labeled as 4 µF, 250 V. Find the minimum number of capacitors needed to get an arrangement equivalent to 16 µF, 1000 V.

A conducting sphere of radius R, carrying a charge Q, is joined to an uncharged conducting sphere of radius 3R. The charge flowing between them will be

A capacitor is charged by using a battery which is then disconnected. A dielectric slab is then slipped between the plates, which results in

The capacitance of a spherical condenser is 1 uF. If the spacing between the two spheres is 1 mm, then the radius of the outer sphere is

The electric field between two charged parallel plates is reduced to one-third when the polythene sheet is inserted and reduced to one-eighth when the PVC slab is inserted. The ratio of dielectric constants of PVC to polythene is

A sheet of aluminum foil of negligible thickness is introduced between the plates of a capacitor. The capacitance of the capacitor

A parallel plate air capacitor has a capacitance of 18 µF. If the distance between the plates is trebled and a dielectric medium is introduced, the capacitance becomes 72 µF. The dielectric constant of the medium is

Three capacitors of capacitance 3 uF each are connected in a circuit. Then their maximum and minimum capacitance will be

Three identical capacitors are combined differently. For the same voltage to each combination, the one that stores the greatest energy is

Two capacitors of 20 µF and 30 µF are connected to 200 V and 100 V sources respectively. If they are connected by the wire, what is the common potential of the capacitors?

If the dielectric constant and dielectric strength be denoted by k and x respectively, then a material suitable for use as a dielectric in a capacitor must have

A 20 F capacitor is charged to 10 V and isolated. It is then connected in parallel with an uncharged 60 F capacitor. The decrease in the energy of the system will be

Assertion: A parallel plate capacitor is charged by a battery. The battery is then disconnected. If the distance between the plates is increased, the energy stored in the capacitor will decrease. Reason: Work has to be done to increase the separation between the plates of a charged capacitor.

What fraction of the energy drawn from the charging battery is stored in a capacitor?

A parallel plate air capacitor is connected to a battery that maintains a voltage of 12 V between its terminals. Under these conditions, the charge on the capacitor is Q. If the separation between the plates is tripled while the capacitor is kept connected to the battery then

Choose a non-polar dielectric

A technician has only two capacitors. By using these singly or in series or in parallel, he can obtain capacitances of 3.2 µF, 4 µF, 16 µF, and 20 uF. The capacitances of these capacitors are

A cube of marble on each side of 2 m is placed in an electric field of intensity 450 V/m. The energy stored in the marble, if its dielectric constant is 2, is

A Van de Graaff generator is used ( Electrostatic MDCAT MCQs )

MCQ on Electrostatic MDCAT Students

The area of each plate of a parallel plate capacitor is 100 cm² and the distance between the plates is 1 mm. It is filled with mica of dielectric constant 6. The radius of the equivalent capacity of the sphere will be

(A) 47.7 m

(B) 4.77 m

(D) 0.47 m

Option b – 4.77 m

Given a number of capacitors labeled as 4 µF, 250 V. Find the minimum number of capacitors needed to get an arrangement equivalent to 16 µF, 1000 V.

(A) 4

(B) 16

(D) 64

Option d – 64

A conducting sphere of radius R, carrying a charge Q, is joined to an uncharged conducting sphere of radius 3R. The charge flowing between them will be

(A) 0.25 Q

(B) 0.5 Q

(D) 1.5 Q

Option c – 0.75 Q

A capacitor is charged by using a battery which is then disconnected. A dielectric slab is then slipped between the plates, which results in

(A) a reduction of charge on the plates and an increase of potential difference across the plates.

(B) decrease in the potential difference across the plates, reduction in the stored energy, but no change in the charge on the plates.

(C) increase in the potential difference across the plates, reduction in stored energy, but no change in the charge on the plates.

(D) none of the above.

Option b – decrease in the potential difference across the plates, reduction in the stored energy, but no change in the charge on the plates.

The capacitance of a spherical condenser is 1 uF. If the spacing between the two spheres is 1 mm, then the radius of the outer sphere is

(A) 30 cm

(B) 6 m

(D) 3 m

Option d – 3 m

The electric field between two charged parallel plates is reduced to one-third when the polythene sheet is inserted and reduced to one-eighth when the PVC slab is inserted. The ratio of dielectric constants of PVC to polythene is

(A) 3 : 8

(B) 8 : 3

(D) 3 : 5

Option b – 8 : 3

A sheet of aluminum foil of negligible thickness is introduced between the plates of a capacitor. The capacitance of the capacitor

(A) increases.

(B) decreases.

(D) becomes zero.

Option c – remains unchanged.

A parallel plate air capacitor has a capacitance of 18 µF. If the distance between the plates is trebled and a dielectric medium is introduced, the capacitance becomes 72 µF. The dielectric constant of the medium is

(A) 4

(B) 9

(D) 2

Option c – 12

Three capacitors of capacitance 3 uF each are connected in a circuit. Then their maximum and minimum capacitance will be

(A) 9 µF, 1 µF

(B) 8 µF, 2 uF

(D) 3 uF, 2 µF

Option a – 9 µF, 1 µF

Three identical capacitors are combined differently. For the same voltage to each combination, the one that stores the greatest energy is

(A) two in parallel and the third in series with it.

(B) three in series.

(D) two in series and a third in parallel with it.

Option c – three in parallel.

Two capacitors of 20 µF and 30 µF are connected to 200 V and 100 V sources respectively. If they are connected by the wire, what is the common potential of the capacitors?

(A) 16 volt

(B) 140 volt

(D) 400 volt

Option b – 140 volt

If the dielectric constant and dielectric strength be denoted by k and x respectively, then a material suitable for use as a dielectric in a capacitor must have

(A) high k and high x.

(B) high k and low x.

(D) low k and high x.

Option a – high k and high x.

A 20 F capacitor is charged to 10 V and isolated. It is then connected in parallel with an uncharged 60 F capacitor. The decrease in the energy of the system will be

(A) 250 J

(B) 750 J

(D) 150 J

Option b – 750 J

Assertion: A parallel plate capacitor is charged by a battery. The battery is then disconnected. If the distance between the plates is increased, the energy stored in the capacitor will decrease. Reason: Work has to be done to increase the separation between the plates of a charged capacitor.

(A) Assertion is True, Reason is True; Reason is a correct explanation for Assertion.

(B) Assertion is True, Reason is True; Reason is not a correct explanation for Assertion.

(D) The assertion is False, Reason is True.

Option d – The assertion is False, Reason is True.

What fraction of the energy drawn from the charging battery is stored in a capacitor?

(A) 75%

(B) 100%

(D) 50%

Option d – 50%

A parallel plate air capacitor is connected to a battery that maintains a voltage of 12 V between its terminals. Under these conditions, the charge on the capacitor is Q. If the separation between the plates is tripled while the capacitor is kept connected to the battery then

(A) the energy stored in the capacitor is tripled.

(B) the energy stored in the capacitor is reduced by a factor of 3.

(D) the energy stored in the capacitor is reduced by a factor of 9.

Option b – the energy stored in the capacitor is reduced by a factor of 3.

Choose a non-polar dielectric

(A) Ethyl alcohol

(B) Benzene

(D) Hydrochloric acid

Option b – Benzene

A technician has only two capacitors. By using these singly or in series or in parallel, he can obtain capacitances of 3.2 µF, 4 µF, 16 µF, and 20 uF. The capacitances of these capacitors are

(A) 8 µF and 4 µF

(B) 8 µF and 12 µF

(D) 4 µF and 16 µF

Option d – 4 µF and 16 µF

A cube of marble on each side of 2 m is placed in an electric field of intensity 450 V/m. The energy stored in the marble, if its dielectric constant is 2, is

(A) 2 µJ

(B) 14 µJ

(D) 3.93 μJ

Option b – 14 µJ

A Van de Graaff generator is used ( Electrostatic MDCAT MCQs )

(A) to produce high potential.

(B) to accelerate charged particles like protons, and deuterons.

(D) for all of these.

Option d – for all of these.

We covered all the electrostatic mdcat MCQs above in this post for free so that you can practice well for the exam.

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MCQ on Electrostatic MDCAT Students

The area of each plate of a parallel plate capacitor is 100 cm² and the distance between the plates is 1 mm. It is filled with mica of dielectric constant 6. The radius of the equivalent capacity of the sphere will be

Given a number of capacitors labeled as 4 µF, 250 V. Find the minimum number of capacitors needed to get an arrangement equivalent to 16 µF, 1000 V.

A conducting sphere of radius R, carrying a charge Q, is joined to an uncharged conducting sphere of radius 3R. The charge flowing between them will be

A capacitor is charged by using a battery which is then disconnected. A dielectric slab is then slipped between the plates, which results in

The capacitance of a spherical condenser is 1 uF. If the spacing between the two spheres is 1 mm, then the radius of the outer sphere is

The electric field between two charged parallel plates is reduced to one-third when the polythene sheet is inserted and reduced to one-eighth when the PVC slab is inserted. The ratio of dielectric constants of PVC to polythene is

A sheet of aluminum foil of negligible thickness is introduced between the plates of a capacitor. The capacitance of the capacitor

A parallel plate air capacitor has a capacitance of 18 µF. If the distance between the plates is trebled and a dielectric medium is introduced, the capacitance becomes 72 µF. The dielectric constant of the medium is

Three capacitors of capacitance 3 uF each are connected in a circuit. Then their maximum and minimum capacitance will be

Three identical capacitors are combined differently. For the same voltage to each combination, the one that stores the greatest energy is

Two capacitors of 20 µF and 30 µF are connected to 200 V and 100 V sources respectively. If they are connected by the wire, what is the common potential of the capacitors?

If the dielectric constant and dielectric strength be denoted by k and x respectively, then a material suitable for use as a dielectric in a capacitor must have

A 20 F capacitor is charged to 10 V and isolated. It is then connected in parallel with an uncharged 60 F capacitor. The decrease in the energy of the system will be

Assertion: A parallel plate capacitor is charged by a battery. The battery is then disconnected. If the distance between the plates is increased, the energy stored in the capacitor will decrease. Reason: Work has to be done to increase the separation between the plates of a charged capacitor.

What fraction of the energy drawn from the charging battery is stored in a capacitor?

A parallel plate air capacitor is connected to a battery that maintains a voltage of 12 V between its terminals. Under these conditions, the charge on the capacitor is Q. If the separation between the plates is tripled while the capacitor is kept connected to the battery then

Choose a non-polar dielectric

A technician has only two capacitors. By using these singly or in series or in parallel, he can obtain capacitances of 3.2 µF, 4 µF, 16 µF, and 20 uF. The capacitances of these capacitors are

A cube of marble on each side of 2 m is placed in an electric field of intensity 450 V/m. The energy stored in the marble, if its dielectric constant is 2, is

A Van de Graaff generator is used ( Electrostatic MDCAT MCQs )

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