
Concept explainers
(a)
The average power required to energize the capacitor.
(a)

Answer to Problem 85A
Explanation of Solution
Given:
The energy stored in the capacitor is
The time taken by the capacitor to charge is
Formula used:
The power
Where
Calculation:
Substituting the numerical values in equation
Conclusion:
The average power required to energize the capacitor to
(b)
The power delivered to the lamp .
(b)

Answer to Problem 85A
Explanation of Solution
Given:
The energy stored in the capacitor is
Time taken by the capacitor to discharge all its energy is
Formula used:
The power
Where
Calculation:
Substituting the numerical values in equation
Conclusion:
The power delivered to the lamp if the capacitor plates are discharged through the probe lampis
(c)
To explain:The possibility of large value of power as obtained in part (b).
(c)

Explanation of Solution
Introduction:
The quantity of energy transferred or converted in unit time is called power. It is a scalar quantity. Capacitors are used to store the power for future use.
The power delivered to the lamp if the capacitor plates are discharged through the probe lampis
Power is indirectly related to the capacitor charging or discharging time. Smaller the time required to discharge the given amount of energy, larger will be the power dissipated by the capacitor.
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