Question

Calculate the work done in taking a charge of 0.02 from A to B if the potential at A is 20V, and that at B is 30V

Answer 1

Answer:

Explanation:

Solution,

Here, we have

Charge, Q = 0.02 C

Potential at point, A = 20 V

Potential at point, B = 30 V

To Find,

Work done, W = ??

Here, we get

Potential difference = (30 - 20) V

Potential difference = 10 V

Now, We know that

V = W/Q

So, putting all the values, we get

V = W/Q

⇒ W = P × Q

⇒ W = 10 × 0.02

⇒ W = 0.2 J

Hence, the work done in taking charge is 0.2 J.

Answer 2

Explanation:

Solution,

Here, we have

Charge, Q = 0.02 C

Potential at point, A = 20 V

Potential at point, B = 30 V

To Find,

Work done, W = ??

Here, we get

Potential difference = (30 - 20) V

Potential difference = 10 V

Now, We know that

V = W/Q

So, putting all the values, we get

V = W/Q

⇒ W = P × Q

⇒ W = 10 × 0.02

⇒ W = 0.2 J

Hence, the work done in taking charge is 0.2 J.