Question

If q₁=-8.2C and q₂=4.9C, what is the electric potential difference V_a-V_b (in gigavolts GV)?

Answer 1

Let distances:

$d_1=1$ m, $d_2=0.5$ m

Then:

$V_a-V_b=k(q_1/d_1-q_2/d_2)=9\cdot10^9(-8.2+9.8)=14.4$ GV