Three point charges are fixed at the corners of an equilateral triangle of side

PHYSICS · Single correct · A Level · Physics · Fields and their consequences · Fields and their consequences

Problem

0.20\,\text{m}

. Charges

+4.0\,\mu\text{C}

are at two of the corners, and a charge

-2.0\,\mu\text{C}

is at the third corner. What is the magnitude of the net electric force on the

-2.0\,\mu\text{C}

charge? (a)

1.8\,\text{N}

(b)

4.2\,\text{N}

(c)

3.1\,\text{N}

(d)

3.6\,\text{N}