a short circuited coil is placed in a time varying magnetic field electrical power is dissipated due to the - Physics - Electromagnetic Induction

Question

a short circuited coil is placed in a time varying magnetic
field electrical power is dissipated due to the current induced in
the coil If the number of turn were to be quadrupled and the wire
radius halved, electric power dissipiated would be
1) halved
2) same
3) doubled
4) quadrupled

Ankur · Accepted Answer

Power dissipated, P = e2Rwhere, e = induced e
m f
 = -d ϕdtand ϕ = N B A therofre, e = - N A d Bd tAlso, R α 1a α 1r2Therefore, P = e2R α N2 A2 
 r2l α N2 r4lAs r is halved, and N is quadrupled
Therefore, P remains the same

a short circuited coil is placed in a time varying magnetic field. electrical power is dissipated due to the current induced in the coil. If the number of turn were to be quadrupled and the wire radius halved, electric power dissipiated would be 1) halved 2) same 3) doubled 4) quadrupled

a short circuited coil is placed in a time varying magnetic field. electrical power is dissipated due to the current induced in the coil. If the number of turn were to be quadrupled and the wire radius halved, electric power dissipiated would be

1) halved

2) same

3) doubled

4) quadrupled