Figure below shows a bulb connected in an electrical circuit.1. When t

1.	Figure below shows a bulb connected in an electrical circuit.1. When the key is switched ON the bulb obtains maximum glow only after a shorter interval of time which property of the solenoid is responsible for the delay?Self-inductionMutual InductionInductive reactanceNone of the above2. If the flux linked with the solenoid changes from 0 to 1 weber in 2 sec. Find the induced emf in the solenoid.3. If the 3v battery is replaced by an AC source with the key closed, what will be observation? Justify your answer.
Answer» 1. Self-induction 2. \(\frac{d\phi}{dt}\) = \(\frac{1}{2}\) = = 0.5V. 3. When AC is connected the brightness of bulb will be decreased. This is due to the back emf in the circuit.

Figure below shows a bulb connected in an electrical circuit.1. When the key is switched ON the bulb obtains maximum glow only after a shorter interval of time which property of the solenoid is responsible for the delay?Self-inductionMutual InductionInductive reactanceNone of the above2. If the flux linked with the solenoid changes from 0 to 1 weber in 2 sec. Find the induced emf in the solenoid.3. If the 3v battery is replaced by an AC source with the key closed, what will be observation? Justify your answer.

Answer»

1. Self-induction

2. \(\frac{d\phi}{dt}\) = \(\frac{1}{2}\) = = 0.5V.

3. When AC is connected the brightness of bulb will be decreased. This is due to the back emf in the circuit.

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