Concept explainers
(a)
The current in the circuit The current in the circuit a long time after the switch has been in position
(a)
Answer to Problem 82CP
The current in the circuit a long time after the switch has been in position
Explanation of Solution
Write the expression to obtain the current in the circuit The current in the circuit a long time after the switch has been in position
Here,
Conclusion:
Substitute
Therefore, the current in the circuit a long time after the switch has been in position
(b)
The initial voltage across each resistor and across the inductor when switch is thrown from position
(b)
Answer to Problem 82CP
The initial voltage across the resistor which is in series with the battery is
Explanation of Solution
When switch is thrown from position
Write the expression to obtain the voltage across the resistor which is in series with the battery.
Here,
Write the expression to obtain the voltage across the resistor which is in parallel with the battery.
Here,
Write the expression to obtain the voltage across the inductor.
Here,
Conclusion:
Substitute
Substitute
Substitute
Therefore, the initial voltage across the resistor which is in series with the battery is
(c)
The time elapsed before the voltage across the inductor drops to
(c)
Answer to Problem 82CP
The time elapsed before the voltage across the inductor drops to
Explanation of Solution
Write the expression to obtain the time elapsed before the voltage across the inductor drops to
Here,
Conclusion:
Substitute
Further solve the above equation.
Further solve the above equation.
Therefore, the time elapsed before the voltage across the inductor drops to
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Chapter 32 Solutions
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