A potentiometer contains a wire of length 4m and resistance 10ohms (connected to EMF 3V). Find potential gradient of wire (1) 0.75 V/m (2) 2 V/m (3) 6 V/m (4) 10 V/m

A potentiometer can be defined as a three-terminal resistor with either rotating or sliding contact that develops an adjustable voltage divider. Now, as per the given question, we following can be said:

Potentiometer wire (L) = 4m
Resistance (R) = 10Ω
EMF of the cell = 3V

The potential across potentiometer wire can be estimated as:

V_p = 10 × I

Here, I = E/R

Thus, after replacing the values:

⇒ I = 3/10

⇒ I = 0.3 A

⇒ V_p = 10 × 0.3

⇒ V_p = 3V

Potential gradient can be expressed as the potential difference per unit length. The SI unit of the potential gradient can be defined by replacing the unit of potential difference or voltage and length.

Therefore, it can be represented as:

Potential gradient (k) = V_p/L

⇒ k = 3/4

⇒ Hence, k = 0.75 Vm^-1

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A potentiometer contains a wire of length 4m and resistance 10ohms (connected to EMF 3V). Find potential gradient of wire (1) 0.75 V/m (2) 2 V/m (3) 6 V/m (4) 10 V/m

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5.
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?

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A potentiometer contains a wire of length 4m and resistance 10ohms (connected to EMF 3V). Find potential gradient of wire (1) 0.75 V/m (2) 2 V/m (3) 6 V/m (4) 10 V/m

Related Questions

CBSE CLASS XII Related Questions

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

4.With the help of a labelled diagram, explain the principle, construction and working of an a.c. generator.

5.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?

Similar Physics Concepts

Comments

SUBSCRIBE TO OUR NEWS LETTER

2.
Write two advantages of reflecting telescope over refracting telescope.

4.
With the help of a labelled diagram, explain the principle, construction and working of an a.c. generator.

5.
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?