Questions

A current of 5A is flowing through a 0.5 H inductor. If the current starts increasing at a rate of 2 A/S, power consumption by the inductor will be

Remember concepts with our Masterclasses.

80k Users

60 mins Expert Faculty Ask Questions

5 W

7.5 W

2.5 W

0.5 W

Ready to Test Your Skills?

Check Your Performance Today with our Free Mock Tests used by Toppers!

detailed solution

Correct option is A

(1)Induced emf ε=L didt=0.5 × 2 volt=1 voltand thus emf opposes the growth of current.∴ power consumed by the inductor = 1 × 5 W=5 watt.

Talk to our academic expert!

Create Your Own Test
Your Topic, Your Difficulty, Your Pace

Similar Questions

Two different coils have self-inductances L₁ = 8 mH, L₂ =2 mH. The current in one coil is increased at aconstant rate. The current in the second coil is also increased at the same rate. At a certain instant of time, the power given to the two coils is the same. At that time the current, the induced voltage and the energy stored in the first coil are i₁ V₁and W₁respectively. Corresponding value for the second coil at the same instant are i₂, V₂ and W₂ respectively. Then

View solution