Question: 1. Two point charges, +3.20 C and -7.60 C, are separated by 1.80 m. What is the electric potential midway between them? 2. Two charges

1. Two point charges, +3.20 C and -7.60 C, are separated by 1.80 m. What is the electric potential midway between them?

2. Two charges A and B are fixed in place, at different distances from a certain spot. At this spot the potentials due to the two charges are equal. Charge A is 0.15 m from the spot, while charge B is 0.45 m from it. Find the ratio q_B/q_A of the charges.

3. A charge of +420 C is fixed at the center of a square that is 0.20 m on a side. How much work is done by the electric force as a charge of +6.8 C is moved from one corner of the square to any other empty corner?

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