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Electromagnetic Induction — Physics STD 12 Science — Question

Bihar BoardEnglish MediumSTD 12 SciencePhysicsElectromagnetic Induction1 Mark
Question

Assertion :   The back emf in a dc motor is maximum when the motor has just been switched on.

Reason     : When motor is switched on it has maximum speed.

(a) If both assertion and reason are true and the reason is the correct explanation of the assertion.

(b) If both assertion and reason are true but reason is not the correct explanation of the assertion.

(c) If assertion is true but reason is false.

(d) If the assertion and reason both are false.

✓

Answer

(d) If the assertion and reason both are false.

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