Concept explainers
(a)
The total stored energy before the two capacitors are connected.
(a)
Answer to Problem 52P
Explanation of Solution
Given:
The capacitor of
Formula used:
The potential energy stored in the capacitor is
Where,
Calculation:
The potential energy stored is
(b)
The total stored energy after the two capacitors are connected.
(b)
Answer to Problem 52P
Explanation of Solution
Given:
The capacitor of
Formula used:
The charge on capacitor is
Where,
Moreover, the potential energy is given as
Calculation:
Assume that the charge stored in the capacitor remains constant and after the connection of the capacitors, the voltage is
The total charge on the capacitor is
But,
The potential is constant. Therefore,
So,
Hence,
Similarly,
The total potential energy is
(c)
The change in stored energy.
(c)
Answer to Problem 52P
Explanation of Solution
Given:
The capacitor of
Formula used:
It is known that, the potential energy stored in the capacitor is
Where,
Calculation:
The change in energy stored is
Chapter 17 Solutions
Physics: Principles with Applications
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