The figures show three points in the vicinity of two point charges. The charges

ID: 2279098 • Letter: T

Question

The figures show three points in the vicinity of two point charges. The charges have equal magnitudes.

Part A)

Rank in order, from most positive to most negative, the potentials Va to Vc on the figure a.

Rank the potentials in decreasing order. To rank items as equivalent, overlap them.

V_a V_b V_c

Part B)

Rank in order, from most positive to most negative, the potentials Va to Vc on the figure b.

Rank the potentials in decreasing order. To rank items as equivalent, overlap them.

V_a V_b V_c

What is the electric potential at the point indicated with the dot in the figure? Answer in V

Part A)

Volatge at a point due to a charge q at a distance r = Kq/r

For point a, the distance from the second charge which is far from it is greater than for the point b

So, V_a = V_c

V_b > V_a

SO the order is V_b V_a V_c

V_a and V_c are to be overlapped.

Part B)

For this V_a is greater than the rest as it is far from the negative charge.

V_a>V_b>V_c

so order is

V_a V_b V_c

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.