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Standard XII

Physics

Mean Value

A constant vo...

Question

A constant voltage of 25 V is applied to a series L – R circuit at t = 0, by closing a switch. What is the potential difference across the resistor and the inductor at time t = 0?

0 V, 25 V

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12.5 V, 12.5 V

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10 V, 15 V

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25 V, 0V

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Solution

The correct option is A 0 V, 25 V
Initially, the current through the circuit is zero hence
$V_{R} = 0$ ; $V_{L} = 25 V$

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A constant voltage of 25 V is applied to a series L – R circuit at t = 0, by closing a switch. What is the potential difference across the resistor and the inductor at time t = 0?

The correct option is A 0 V, 25 VInitially, the current through the circuit is zero hence VR=0 ; VL=25V

The correct option is A 0 V, 25 V
Initially, the current through the circuit is zero hence
$V_{R} = 0$ ; $V_{L} = 25 V$