Homework, 4 General Physics

# Homework, 4 General Physics - General Physics II Homework 4...

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General Physics II Homework 4 Worked Examples Giancoli: 17.19, 17.26, 17.63, 17.65, 17.72 19. The potential at the corner is the sum of the potentials due to each of the charges, using Eq. 17-5. 26. Use Eq. 17-2b and Eq. 17-5. 63. ( a )Because of the inverse square nature of the electric field, any location where the field is zero must be closer to the weaker charge . Also, in between the two charges, the fields due to the two charges are parallel to each other (both to the left) and cannot cancel. Thus the only places where the field can be zero are closer to the weaker charge, but not between them. In the diagram, this is the point labeled as “ x . Take to the right as the positive direction. ( b )The potential due to the positive charge is positive everywhere, and the potential due to the negative charge is negative everywhere. Since the negative charge is smaller in magnitude than the positive charge, any point where the potential is zero must be closer to the negative charge. So consider locations between the charges (position ) and to the left of the negative charge (position ) as shown in the diagram.

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