Concept explainers
(a)
To Find: The potential difference across each capacitor.
(a)
Answer to Problem 54P
Explanation of Solution
Given:
Capacitor 1,
Capacitor 2,
Potential difference,
Formula used:
Potential difference
Where,
Calculation:
Charge on the capacitor when they are initially connected in series can be calculated as:
When they are connected in parallel, net charge is:
Equivalent capacitor when connected in parallel is
In parallel combination, potential difference is same across all the capacitors.
Potential difference can be calculated as:
Conclusion:
Potential difference across each capacitor is
(b)
To Find: The energy stored in capacitor before disconnection and after reconnection.
(b)
Answer to Problem 54P
Explanation of Solution
Given:
Capacitor 1,
Capacitor 2,
Potential difference,
Formula used:
Energy stored
Where,
Calculation:
Equivalent capacitance when capacitors are connected in series:
Initially energy stored in capacitor is:
Equivalent capacitance when capacitors connected in parallel:
Potential difference can be calculated as:
Final energy stored in capacitor is:
Conclusion:
Energy stored in capacitor before disconnection is
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Chapter 24 Solutions
Physics For Scientists And Engineers Student Solutions Manual, Vol. 1
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