Question

how much work is done in moving charge of 2 coulomb from a point at 118v through a point at 128v​

Answer 1

Work done=change in potential energy

=ΔU

we know that

ΔU=ΔV*q

=(128-118)*2

=10*2

=20 J

Hope this helps

Answer 2

work done on moving a charge of 2C from a point at 118v through a point at 128v​ will be:

Q x Voltage difference

= 2 x (128-118)

=2 x 10

= 20 J