
Concept explainers
(a)
The current in the battery, in
(a)

Answer to Problem 66P
The current in the battery, in
Explanation of Solution
Given:
The inductance of the inductor is
The resistance of the resistor is
The voltage of battery is
Formula used:
The expression for the Kirchhoff’s of current at the junction given by,
Calculation:
The current through the battery and inductor is calculated as,
As the switch is closed the value of current through the inductor,
Then,
Solve further as,
Conclusion:
Therefore, the current in the battery, in
(b)
The current in the battery, in
(b)

Answer to Problem 66P
The current in the battery, in
Explanation of Solution
Calculation:
The current through the resistor is calculated by using the loop rule as:
When the switch remains closed for long time, the current will be steady and
The current through the battery is calculated by using the loop rule to right side:
The current through the inductor is calculated by using the junction rule as:
Conclusion:
Therefore the current in the battery, in
(c)
The current in the battery, in
(c)

Answer to Problem 66P
The current in the battery, in
Explanation of Solution
Calculation:
When the switch is reopened the current in the battery instantly becomes zero and the current in the inductor changes continuously until it takes the value of
Conclusion:
Therefore, the current in the battery, in
(d)
The current in the battery, in
(d)

Answer to Problem 66P
The current in the battery, in
Explanation of Solution
Calculation:
When the switch is reopened and after some time all the currents will become zero.
Conclusion:
Therefore, the current in the battery, in
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Chapter 28 Solutions
Physics for Scientists and Engineers
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