If 100 joule of work must be done to move electric charge equal to 4 C from a place, where potential is −10 volt to another place, where potential is V volt, find the value of V.
Given work done = 100J
charge q = 4C
from potential V1 = -10 Volts to V2 = V Volts
so,
W=q△V
W=q(V2−V1)
W=4[V2−(−10)]
1004=V2+10
V2=15volts