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Closing switch S, connects the R-L combination in series with a source of emf E. S1 a elle R S2 Closing switch S, while opening switch S1 disconnnects the combination from the source.

Closing switch S, connects the R-L combination in series with a source of emf E. S1 a elle R S2 Closing switch S, while opening switch S1 disconnnects the combination from the source.

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In Fig, suppose that E = 60.0 V, R = 240 Ω, and L = 0.160 H. With switch S2 open, switch S1 is left closed until a constant current is established. Then S2 is closed and S1 opened, taking the battery out of the circuit.

(a) What is the initial current in the resistor, just after S2 is closed and S1 is opened?

(b) What is the current in the resistor at t = 4.00 x 10-4 s?

(c) What is the potential difference between points b and c at t = 4.00 x 10-4 s? Which point is at a higher potential? (d) How long does it take the current to decrease to half its initial value?

Closing switch S, connects the R-L combination in series with a source of emf E. S1 a elle R S2 Closing switch S, while opening switch S1 disconnnects the combination from the source.
Transcribed Image Text:Closing switch S, connects the R-L combination in series with a source of emf E. S1 a elle R S2 Closing switch S, while opening switch S1 disconnnects the combination from the source.
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