Electricity and Circuits Class 6 MCQ. We covered all the Electricity and Circuits Class 6 MCQ in this post for free so that you can practice well for the exam.
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MCQ on Electricity and Circuits for Class 6 Students
A magnetic field directed in the north direction acts on an electron moving in the east direction. The magnetic force on the electron will act
(a) vertically upwards.
(b) towards east.
(c) vertically downwards.
(d) towards north.
Option c – vertically downwards
The direction of the force on a current-carrying conductor in a magnetic field is given by
(a) Fleming’s left-hand rule.
(b) Fleming’s right-hand rule.
(c) Right-hand thumb rule.
(d) Left-hand thumb rule.
Option a – Fleming’s left-hand rule
The direction of the induced current is given by
(a) Fleming’s right-hand rule.
(b) Fleming’s left-hand rule.
(c) Right-hand thumb rule.
(d) Left-hand thumb rule.
Option a – Fleming’s right-hand rule
Switches are connected to
(a) live wire.
(b) neutral wire.
(c) earth wire.
(d) any one.
Option a – live wire
The most important safety method used for protecting home appliances from short-circuiting or Overloading is
(a) earthing
(b) the use of stabilizers
(c) the use of a fuse
(d) the use of an electric meter
Option c – the use of a fuse
Among the following statements : (i) A discharge lamp uses a discharge tube that is filled with gas at very low pressure. (ii) Always white light is emitted independent of gas taken in the lamp.
(a) Only (i) is true
(b) Only (ii) is true
(c) Both (i) and (ii) are true
(d) Both (i) and (ii) are false
Option a – Only (i) is true
Among identical spheres, A and B have charges as – 5 C and – 16 C
(a) – 5C is at a higher potential
(b) -16 C is at a higher potential
(c) both are at equal potential
(d) it cannot be said
Option a – – 5C is at a higher potential
The magnetic field is the strongest at the
(a) middle of the magnet.
(b) north pole.
(c) south pole.
(d) both poles.
Option d – both poles
The material of the core of a strong magnet is
(a) aluminum
(b) soft iron
(c) copper
(d) steel
Option b – soft iron
Magnetic lines of force inside the current-carrying solenoid are
(a) perpendicular to the axis.
(b) along the axis and are parallel to each other.
(c) parallel inside the solenoid and circular at the ends.
(d) circular.
Option c – parallel inside the solenoid and circular at the ends
A soft iron bar is introduced inside a current-carrying solenoid. The magnetic field inside the solenoid
(a) will become zero.
(b) will increase.
(c) will decrease.
(d) will remain unaffected.
Option b – will increase
An electric generator actually acts as
(a) a source of electric charge.
(b) a source of neat energy.
(c) an electromagnet.
(d) a converter of energy.
Option d – a converter of energy
The direction of conventional current is from
(a) Negative terminal to positive terminal
(b) Positive terminal to negative terminal
(c) In any direction
(d) In both the directions
Option b – Positive terminal to negative terminal
What should be the core of an electromagnet?
(a) soft iron
(b) hard iron
(c) rusted iron
(d) none of above
Option a – soft iron
Who has stated the Right-hand Thumb Rule?
(a) Orsted
(b) Fleming
(c) Einstein
(d) Maxwell
Option d – Maxwell
What is that instrument which can detect the presence of electric current in a circuit?
(a) galvanometer
(b) motor
(c) generator
(d) none of above
Option a – galvanometer
Which device produces the electric current?
(a) generator
(b) galvanometer
(c) ammeter
(d) motor
Option a – generator
The best material to make permanent magnets is
(a) aluminum
(b) soft iron
(c) copper
(d) alnico
Option d – alnico
The magnetic field lines always begin from
(a) the N-pole and end on S-pole.
(b) S-pole and end on N-pole.
(c) start from the middle and end at N-pole.
(d) start from the middle and end at S-pole.
Option a – the N-pole and end on S-pole
If the current values periodically from zero to a maximum value, back to zero, and then reverses its direction, the current is
(a) direct
(b) alternative
(c) pulsating
(d) none of the above
Option b – alternative
Earth wire carries
(a) current
(b) voltage
(c) no current
(d) heat
Option c – no current
The main advantage of A.C power transmission over D.C power transmission over long distances is
(a) AC transmits without much loss of energy
(b) less insulation problem
(c) less problem of instability
(d) easy transformation.
Option a – AC transmits without much loss of energy
Which among these are the main characteristics of fuse elements?
(a) High conductivity
(b) Low melting point
(c) Do not bum due to oxidation
(d) All of the above
Option d – All of the above
Overloading is due to
(a) Insulation of wire damaged
(b) a Fault in the appliances
(c) Accidental hike in supply voltage
(d) All of the above
Option d – All of the above
The most important safety method used for protecting home appliances from short-circuiting or overloading is
(a) earthing
(b) use of fuse
(c) use of stabilizers
(d) use of an electric meter
Option b – use of fuse
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