
Concept explainers
(a)
Find the charge on the upper plate after the capacitor fully charged.
(a)

Answer to Problem 134P
The charge on the upper plate after the capacitor fully charged is
Explanation of Solution
Write the equation for charge on upper plate.
Here,
Conclusion:
Substitute
Therefore, the charge on the upper plate after the capacitor fully charged is
(b)
Draw the graph between current through the resistor with time.
(b)

Answer to Problem 134P
The graph between current through the resistor with time is given below.
Explanation of Solution
Write the equation for time constant.
Here,
Substitute the value of
Write the equation for initial current.
Write the equation for variation of current with time.
Conclusion:
Substitute
Substitute
Substitute
Therefore, the graph between current through the resistor with time using the above equation is given below.
(b)
Find the energy dissipated in whole discharging process.
(b)

Answer to Problem 134P
The energy dissipated in whole discharging process is
Explanation of Solution
Write the equation for total energy.
Here,
Conclusion:
Substitute
Therefore, the energy dissipated in whole discharging process is
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Chapter 18 Solutions
Physics
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