A 1m potentiometer wire (PQ) is joined to a standard cell E1. Another cell E2 (emf 1.02 V) is joined with resistance ‘r’ and switch S. With the switch open, the null position is acquired at a distance of 49 cm from Q. Find potential gradient in the potentiometer wire.

A potentiometer can be represented as a three-terminal resistor with either rotating or sliding contact that develops an adjustable voltage divider. As per the given question:

Potentiometer

PQ= 1 m
QJ = 49 cm
PJ = 51 cm

⇒ V/l = 1.02/51 = 0.02 v/cm

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A 1m potentiometer wire (PQ) is joined to a standard cell E1. Another cell E2 (emf 1.02 V) is joined with resistance ‘r’ and switch S. With the switch open, the null position is acquired at a distance of 49 cm from Q. Find potential gradient.

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Consider the nuclear reaction \( X \to Y + Z \). Let \( M_x \), \( M_y \), and \( M_z \) be the masses of the three nuclei X, Y, and Z respectively. Then which of the following relations hold true?

4.
The resistance of a metal wire at \( 20^\circ \text{C} \) is \( 1.05 \, \Omega \) and at \( 100^\circ \text{C} \) is \( 1.38 \, \Omega \). Determine the temperature coefficient of resistivity of this metal.

5.
Write two advantages of reflecting telescope over refracting telescope.

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A 1m potentiometer wire (PQ) is joined to a standard cell E1. Another cell E2 (emf 1.02 V) is joined with resistance ‘r’ and switch S. With the switch open, the null position is acquired at a distance of 49 cm from Q. Find potential gradient.

Related Questions

CBSE CLASS XII Related Questions

2.Consider the nuclear reaction \( X \to Y + Z \). Let \( M_x \), \( M_y \), and \( M_z \) be the masses of the three nuclei X, Y, and Z respectively. Then which of the following relations hold true?

4. The resistance of a metal wire at \( 20^\circ \text{C} \) is \( 1.05 \, \Omega \) and at \( 100^\circ \text{C} \) is \( 1.38 \, \Omega \). Determine the temperature coefficient of resistivity of this metal.

5.Write two advantages of reflecting telescope over refracting telescope.

Similar Physics Concepts

Comments

SUBSCRIBE TO OUR NEWS LETTER

2.
Consider the nuclear reaction \( X \to Y + Z \). Let \( M_x \), \( M_y \), and \( M_z \) be the masses of the three nuclei X, Y, and Z respectively. Then which of the following relations hold true?

4.
The resistance of a metal wire at \( 20^\circ \text{C} \) is \( 1.05 \, \Omega \) and at \( 100^\circ \text{C} \) is \( 1.38 \, \Omega \). Determine the temperature coefficient of resistivity of this metal.

5.
Write two advantages of reflecting telescope over refracting telescope.