A coil of inductance 0.5 H carries a current changing at 4 A s⁻¹. The …

Question

A coil of inductance 0.5 H carries a current changing at 4 A s⁻¹. The induced EMF is:

Accepted Answer

C. 2 V

1. |EMF| = L · |dI/dt| = 0.5 × 4 = 2 V.
2. The minus sign indicates back-EMF direction (opposes the change).
_Source: syllabus Physics Ch 6 §6.8 (back-EMF numerical)_

Answer

0.5 V

Answer

1 V

Answer

8 V

A coil of inductance 0.5 H carries a current changing at 4 A s⁻¹. The induced EMF is:

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