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MHT CET2012PhysicsElectromagnetic Induction

A coil of resistance 5 and inductance 4 H is connected to a 10 ~V battery. The energy stored in the coil

Options

  1. A0.8 ~J
  2. B8 ~J
  3. C16 ~J
  4. D4 ~J

Correct answer

B. 8 ~J

Step-by-step solution

Stored energy, U= 1 2 L i²= 1 2 L ( E R )² Here, E=10 ~V , L=4 H and R=5 = 1 2 4 ( 10 5 )² ~J =8 ~J

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