The lines show equipotential contours in the plane of three point charges, Q 1 ,
ID: 2288908 • Letter: T
Question
The lines show equipotential contours in the plane of three point charges, Q1, Q2, and Q3. The positions of the charges are marked by dots. The values of the potentials are in kilovolts as indicated, e.g., +5 kV, ?5 kV; the contour interval is 1 kV. The letters denote locations on the contours. For distances use the scale below the picture, to an appropriate accuracy. Select all the correct statements, e.g., AB.
A. The electric field at i is stronger than at j.
B. Charge Q2 has the largest magnitude.
C. The force on an electron at g points to the bottom of the page.
D. The electric field at f is zero.
E. Charge Q3 is the largest positive charge.
F. Q1 is a negative charge.
2.Calculate the work required to move a charge of -4.60
Explanation / Answer
A. the potentials at points i and b are +3kV and -3kV respectively. to move the charge from i to b,
work done = charge x potential difference = -0.67
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