Question

(b) If a current of 2 A flows through a conductor of whose ends are
at a potential difference of 4 V. Then find resistance.​

Answer 1

The formula goes like this ...

V = IR

Where V = potential difference

I = current

R = resistance

Therefore.....R = V/I

R = 4/2 = 2 ohm

Answer 2

Resistance is 2 ohm.

Given:

• Current through circuit = 2 A
• Potential difference = 4 V.

To find:

• Resistance in the circuit ?

Calculation:

As per Ohm's Law :

• The current in the circuit will be directly proportional to the potential difference provided all the external conditions (like temperature) remain constant.

So, from Ohm's Law, we can say:

$V = I \times R$

• V is potential difference, I is current and R is resistance.

$\implies \: R = \dfrac{V}{I}$

$\implies \: R = \dfrac{4}{2}$

$\implies \: R = 2 \: ohm$

So, the net resistance in the circuit is 2 ohm.