EASY
12th CBSE
IMPORTANT
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A wire whose cross-sectional area is increasing linearly from its one end to the other, is connected across a battery of $V$ volts. Which of the following quantities remains constant in the wire ?

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Justify your answer.

Important Questions on Current Electricity

EASY
12th CBSE
IMPORTANT

A wire whose cross-sectional area is increasing linearly from its one end to the other, is connected across a battery of $V$ volts. Which of the following quantities remains constant in the wire ?Justify your answer.

EASY
12th CBSE
IMPORTANT

A wire whose cross-sectional area is increasing linearly from its one end to the other, is connected across a battery of $V$ volts. Which of the following quantities remains constant in the wire ?Justify your answer.

EASY
12th CBSE
IMPORTANT

A wire whose cross-sectional area is increasing linearly from its one end to the other, is connected across a battery of V volts. Which of the following quantities remains constant in the wire ?Justify your answer.

EASY
12th CBSE
IMPORTANT
Define the term potential gradient. Using this concept, explain the method for comparison of emfs of two primary cells using a potentiometer. Establish the relation used. Write two possible causes of potentiometer giving only one-sided deflection.
EASY
12th CBSE
IMPORTANT
State the working principle of a potentiometer. Draw a circuit diagram to compare the emfs of two primary cells. Derive the formula used.
EASY
12th CBSE
IMPORTANT
Which material is used for potentiometer wire and why ?
EASY
12th CBSE
IMPORTANT
How can the sensitivity of a potentiometer be increased ?
EASY
12th CBSE
IMPORTANT
State the working principle of a potentiometer. With help of the circuit diagram, explain how the internal resistance of a cell is determined.