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JEE Main 2008

Exam: JEE Main
Year: 2008
Subject: Physics
Chapter: Experimental Physics

JEE Main 2008 · Physics · Experimental Physics

Shown in the figure below is a meter-bridge set up with null...

Shown in the figure below is a meter-bridge set up with null deflection in the galvanometer.

Shown in the figure below is a meter-bridge set up with null deflection in the galvanometer. The value of the unknown

The value of the unknown resistor

R

is

Options

A $13.75 \Omega$
B $220 \Omega$
C $110 \Omega$
D $55 \Omega$

Correct answer

B. $220 \Omega$

Step-by-step solution

\frac{55}{20}=\frac{R}{80} \Rightarrow

R=

\frac{55 \times 8}{2}=

220 \Omega

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