Electronics - Inductors - Discussion


An inductor is in series with a voltage source, an open switch, and a resistor. The instant the switch is closed, the inductor acts like

[A]. a short
[B]. an open
[C]. a resistor
[D]. a voltage source

Answer: Option B


No answer description available for this question.

Mantesh said: (Mar 20, 2016)  
Can anybody explain me? Why?

Rajan said: (Apr 26, 2016)  
Should behave as short with zero voltage but high current flow.

Reverse in caps with an open circuit with zero current and same as the source voltage.

Pushpa said: (Jan 26, 2017)  
Open circuit means there is current zero but when the switch is closed current will pass on.

Aravind said: (May 29, 2017)  
An inductor opposes a sudden change in voltage.

Dlsingh said: (Jan 31, 2018)  
Delays the rise, prolongs the fall.

Instant action shows open.

Abar -4744 said: (Oct 19, 2019)  
Correct @Dlsing,

Because, Inductor opposes instant Change in current, but after the time constant 5(rise, decay) Ccurrent will flow normally.

At the beginning, circuit will be like open circuit.

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