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

Question

The curves 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.

The curves 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. olts The letters are on the equipotential Contours.

Explanation / Answer

a) TRUE

Potential energy, U = V*q

Now, at g , V = 0

So, U = 0

So, answer is TRUE

b) FALSE

Charge is proportional to the electric field which is proportional to rate of change in potential

From the potential surfaces we can clearly see that the rate of change in potential is highest for Q2

So, answer is FALSE

c) FALSE

From the potential surfaces we can clearly see that the rate of change in potential is highest for Q2

So, answer is FALSE

d) TRUE

As we move away from Q3, the potential drops , so j is at lower potential than i

e) FALSE

Potential at j is positive but the sign of charge is electron is negative

So, the potential energy is negative

f) TRUE

Potential of nearby point to Q2 is lower than that of points away from it. So, the charge is negative

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