Question

a work done of 100J is applied on 2C charge to move from battery what will be the resistance in circuit if ammeter reading show 5A​

Answer 1

Given:

Work done=100 J

Charge Q=2 C

Current=5 A.

To Find:

The resistance in circuit if ammeter reading show 5A​

Solution:

Finding potential difference V from the relation of work done on a particular charge.

V=W/Q

Calculation:

V=100/2

V=50 Volts

The potential in the circuit is 50 Volts.

According to Ohms law, the potential in a circuit (in volts) is equal to the product of current and resistance in the circuit.

V=IR

Resistance R= V/I

                     = 50/5

                   R= 10 ohm.  

Answer:

Therefore the resistance needed for the circuit to have potential of 50 volts is10 ohm.