Question

Calculate the amount of work done to carry a charge of 4 coulomb from point at 100 volts to a point at 120 volt

Answer 1

Given:

Charge of 4 coulomb carried from point at 100 volts to a point at 120 volt.

To find:

Work done in transporting the charge.

Calculation:

Potential Difference between two points is defined as the work done to carry a certain amount of charge from one point to another.

$\therefore \: \rm{\Delta V = \dfrac{work}{q} }$

$= > \: \rm{120 - 100= \dfrac{work}{4} }$

$= > \: \rm{20= \dfrac{work}{4} }$

$= > \: \rm{work = 20 \times 4}$

$= > \: \rm{work = 80 \: joule}$

So , final answer:

$\boxed{ \red{\sf{work \: done \: in \: carrying \: charge = 80 \: joule}}}$

Answer 2

Answer:

given =

charge { q} = 4 coulomb

v₁ = 100 v

 v₂ = 120 v  

to find = work =?  

solution

v₁ -  v₂ =  charge  /  work

Δv =   charge / work

120 - 100 =  4 / work

work =   20 ×4 = 80 joule

80 joule  work is done to carry 4 coloumb charge