22. In the given figure, charge +Q is placed at the centre of a dotted circle. Work done in taking
another charge +q from A to B is W1, and from B to C is W2. Which one of the following is correct:
W1 > W2, W1 = W2 and W1 < W2 ?



23. How many electrons must be added to one plate and removed from the other so as to store 25.0
J of energy in a 5.0 nF parallel plate capacitor? (b) How would you modify this capacitor so that it
can store 50.0 J of energy without changing the charge on its plates?

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