A galvanometer has a coil of resistance 200 Ω with a full scale deflection at 20 μ A. The value of resistance to be added to use it as an ammeter of range (0-20) mA is:

Current Electricity: JEE Main 2024 Physics question

JEE Main 2024 · 9 Apr, Morning shift · Q6483

JEE Main 20249 Apr, Morning shiftPhysicsHardCurrent Electricity150× since 2002

A galvanometer has a coil of resistance

200 \Omega

with a full scale deflection at

20 \mu \mathrm{A}

. The value of resistance to be added to use it as an ammeter of range

(0-20) \mathrm{mA}

is :