KCET2015PhysicsMagnetic Effects of Current
The average power dissipated in a pure inductor is
Options
- A( 1 2 VI )
- B( VI ² )
- C( VI ² 4 )
- Dzero
Correct answer
D. zero
Step-by-step solution
Average power dissipated ( =P_ a v =V I ) In pure inductor, there is a phase difference of ( / 2 ) between voltage and current. Therefore ( = 2 =0 P_ a v =0 ) Thus, average power dissipated in a pure inductor is zero.