Question

In an induction coil with resistance, the induced emf will be maximum when

• A. the switch is put on due to high resistance
• B. the switch is put off due to high resistance
• C. the switch is put on due to low resistance
• D. the switch is put off due to low resistance

Answer 1

Answer: (B)

Resistance becomes infinite when switch is closed, therefore current goes to zero and emf induced in a circuit, where the value is maximum.