Potentiometer in Hindi

Potentiometer in Hindi. We covered all the Potentiometer in Hindi in this post for free so that you can practice well for the exam.

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Mock test on Potentiometer for Students

Increasing the length of a potentiometer wire affects the accuracy of locating the null point:

a) Increases

b) Decreases

c) Remains unchanged

d) Either b or c

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The most suitable instrument for precisely measuring the EMF of a cell is:

a) Voltmeter

b) Ammeter

c) Potentiometer

d) Wheatstone bridge

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A potentiometer can measure the EMF of a cell accurately, unlike a voltmeter, because:

a) It draws current from the cell

b) A voltmeter does not draw current

c) It does not draw current from the cell

d) A voltmeter is compact

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The internal resistance of a cell can be determined using:

a) Ohmmeter

b) Galvanometer

c) Voltameter

d) Potentiometer

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The sensitivity of a potentiometer can be improved by:

a) Increasing the length of the wire

b) Increasing the EMF of the battery

c) Reducing the length of the wire

d) Decreasing the EMF of the battery

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In a circuit with an external resistance R connected to a cell of internal resistance r, the power is maximum when:

a) R > r

b) R < r

c) R = r

d) Cannot be predicted

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If two cells in series in addition balance 4 m of potentiometer wire and in opposition balance 2 m, the ratio of their EMFs is:

a) 2

b) 3

c) 4

d) 5

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In a potentiometer setup to measure a cell’s internal resistance, a main battery of 20 V (negligible internal resistance) is connected across a 4 m wire. If balancing lengths are 3 m (R = ∞) and 2.85 m (R = 9.5 Ω), the internal resistance of the cell is:

a) 0.25 Ω

b) 0.95 Ω

c) 0.5 Ω

d) 0.75 Ω

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A potentiometer wire of length L and resistance 10 Ω is connected in series with a 2.5 V battery. A cell of EMF 1 V gives a null at L/2. If the series resistance is doubled, the new null point will be at:

a) 0.4 L

b) 0.5 L

c) 0.6 L

d) 0.8 L

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A 1 m potentiometer wire is connected in series with a 490 Ω resistor and a 2 V battery. If the potential gradient is 0.2 mV/cm, the resistance of the potentiometer wire is:

a) 4.9 Ω

b) 7.9 Ω

c) 5.9 Ω

d) 6.9 Ω

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For a potentiometer wire of 5 m length, an electron experiences a force of 4.8 × 10⁻¹⁹ N. The EMF of the battery used in the potentiometer is:

a) 1.5 V

b) 15 V

c) 3 V

d) 4.5 V

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We covered all the potentiometer in Hindi above in this post for free so that you can practice well for the exam.

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Also, check out:

• Gauss Law Hindi
• Electric Dipole Moment in Hindi
• Diffraction of Light in Hindi