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QJEEM22Ph6c7a: JEE Main 2022 Physics - Class 12 JEEM22Ph6c7a Solution: In the given figure of meter bridge experiment, the balancing…

In the given figure of meter bridge experiment, the balancing length AC corresponding to null deflection of the galvanometer is 40 cm40 \mathrm{~cm} . The balancing length, if the radius of the wire AB\mathrm{AB} is doubled, will be ______________ cm\mathrm{cm} .

JEE Main 2022 (Online) 27th July Evening Shift Physics - Current Electricity Question 117 English

Step-by-Step Verified Solution

Even if the radius of wire is doubled, the balancing point would not change as xl−x=R1R2{x \over {l - x}} = {{{R_1}} \over {{R_2}}} , which is not including a term of area.

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