The lines show the equipotential contours in the plane of three point charges, Q

Question

The lines show the equipotential contours in the plane of three point charges, Q1 , Q2 , and Q3 . The values of the potentials are in kV as indicated for the +5, 0, and -5 kV contours. The positions of the charges are indicated by the dots.

Choices: True, False.

• Charge Q2 is the largest negative charge.

• Q1 is a negative charge.

• The electric field at k is zero.

• The electric field at i is stronger than at j.

• The force on a proton at g points to the bottom of the page.

• Charge Q3 has the largest magnitude of all.

Part B Calculate the work required to move a charge of -0.71×10-12C

Part C Calculate the size of the electric field at g .

Part D Calculate the size of the force on a charge of 3.20×10-19 C at k.

Part E Calculate the size of Q3 . The magnitudes of the three charges are in the exact ratios of 1 to 2 to 3.

Explanation / Answer

I think is there any figure? it is not visible

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