Question

7. The potential at a point due to a charge of 4 x 10-7C
located 9cm is .....
V.
(A) 4 x 102 (B)4 x 101
(C) 4x 104(D) 4 x 103​

Answer 1

Answer: A is the correct answer

(A) 4 × 10^2

Explanation: V=9×10^9 × 4×10^-9

____________

9×10^-2

=4 ×10^2