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Q: If the induced current in the coil of a conductor of resistance 4  is 1 mA, then EMF induced in the coil is:
  • A. 1 V
  • B. 4 V
  • C. 4 mV
  • D. 1 mV
Correct Answer: Option C - Given– I = 1 mA, R = 4Ω, V = 0 As we know electromotive force (ε ) = V + IR ε=0 + 1 x 4 ε = 4mV
C. Given– I = 1 mA, R = 4Ω, V = 0 As we know electromotive force (ε ) = V + IR ε=0 + 1 x 4 ε = 4mV

Explanations:

Given– I = 1 mA, R = 4Ω, V = 0 As we know electromotive force (ε ) = V + IR ε=0 + 1 x 4 ε = 4mV