In a moving coil galvanometer, two moving coils M₁ and M₂ have the following particulars: R₁ = 5 Ω, N₁ = 15, A₁ = 3.6×10⁻³ m ², B₁ = 0.25 T R₂ = 7 Ω, N₂ = 21, A₂ = 1.8×10⁻³ m ², B₂ = 0.50 T Assuming that torsional constant of the springs are same for both coils, what will be the ratio of voltage sensitivity of M₁ and M₂ ?

Magnetic Effects of Current and Magnetism: JEE Main 2025 Physics question

JEE Main 2025 · 2 Apr, Evening shift · Q45

JEE Main 20252 Apr, Evening shiftPhysicsMediumMagnetic Effects of Current and Magnetism165× since 2002

In a moving coil galvanometer, two moving coils

M_1

and

M_2

have the following particulars :

R_1 = 5\ \Omega

N_1 = 15

A_1 = 3.6\times10^{-3}

^2

B_1 = 0.25

R_2 = 7\ \Omega

N_2 = 21

A_2 = 1.8\times10^{-3}

^2

B_2 = 0.50

T Assuming that torsional constant of the springs are same for both coils, what will be the ratio of voltage sensitivity of

M_1

and

M_2

JEE Main 2025 Magnetic Effects of Current and Magnetism Question with Solution (2 Apr Evening shift, Q45) | JEE Arc

JEE Main 2025 · 2 Apr, Evening shift · Q45

JEE Main 20252 Apr, Evening shiftPhysicsMediumMagnetic Effects of Current and Magnetism165× since 2002

In a moving coil galvanometer, two moving coils

M_1

and

M_2

have the following particulars :

R_1 = 5\ \Omega

N_1 = 15

A_1 = 3.6\times10^{-3}

^2

B_1 = 0.25

R_2 = 7\ \Omega

N_2 = 21

A_2 = 1.8\times10^{-3}

^2

B_2 = 0.50

T Assuming that torsional constant of the springs are same for both coils, what will be the ratio of voltage sensitivity of

M_1

and

M_2