Question

a)

There are two equal but opposite charged objects separated by a known distance. Where is the electric potential the highest? Select one a. An infinite distance from the charges b. Nearest to either charge the potentials are the same at these points O c. Nearest to the negative charge d. Midway between the charges e. Nearest to the positive charge

b)

Answer 1

V = kq/x - kq/(r - x) dv/dx = 0 kq (- 1/x^2) - kq (1/(r - x)^2) = 0 1/x^2 = 1/(r - x)^2 (r - x)^2 = (x)^2 r - x/x = 1 r/x - 1 = 1 r = 2 x rightarrow so, At arid way it is zero Therefore Nearest to either charge the potentials are the same at these points work is done to moving a charge b/w regions of different potential In case of any doubt, please document sir