An Emf of 10 V Is Applied to a Coil $\varOmega$

question 66

Multiple Choice

An emf of 10 V is applied to a coil with an inductance of 40 mH and a resistance of 0.50 $\varOmega$ .Determine the energy stored in the magnetic field when the current reaches one half of its maximum value.

• A)0.020 J
• B)0.20 J
• C)2.0 J
• D)20 J
• E)200 J

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