In the given potentiometer circuit length os the wire AB is 3 m and resistance is R - 4-5 - The length AC for no deflection in galvanometer is

The correct option is A 1.8 m We know, E= I σ l E = I (RL) l E = VlL where, variables have their usual meanings.using the given values we ge ...

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Standard XII

Physics

Potentiometer

In the given ...

Question

In the given potentiometer circuit length os the wire $A B$ is $3 m$ and resistance is $R = 4.5 Ω$ . The length $A C$ for no deflection in galvanometer is

2 m

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1.8 m

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dependent on

r_{1}

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N o n e o f t h e s e

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Solution

The correct option is A $1.8 m$
We know,

$E = I σ l$

$E = I (\frac{R}{L}) l$

$E = \frac{V l}{L}$

where, variables have their usual meanings.

using the given values we get,

$3 = \frac{5 l}{3}$

$l = \frac{9}{5} = 1.8 m$

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In the given potentiometer circuit length os the wire AB is 3 m and resistance is R=4.5 Ω. The length AC for no deflection in galvanometer is

The correct option is A 1.8 mWe know,E=IσlE=I(RL)lE=VlLwhere, variables have their usual meanings.using the given values we get,3=5l3l=95=1.8m

In the given potentiometer circuit length os the wire $A B$ is $3 m$ and resistance is $R = 4.5 Ω$ . The length $A C$ for no deflection in galvanometer is

The correct option is A $1.8 m$
We know,

$E = I σ l$

$E = I (\frac{R}{L}) l$

$E = \frac{V l}{L}$

where, variables have their usual meanings.

using the given values we get,

$3 = \frac{5 l}{3}$

$l = \frac{9}{5} = 1.8 m$