Question

A current through a conductor is 2A, when there is a potential difference of 10V between its ends. its resistance is__? A.5ohm ,B.0.2ohm ,C.20ohm ,D.2.5ohm​

Answer 1

Answer:

option A 5 ohm

Explanation:

R = V/I = 10/2 = 5 Ω

Answer 2

Given:

The current through a conductor is 2A when the potential difference across it is 10V.

To Find:

The resistance of the conductor.

Solution:

From Ohm's law, we know that at a constant temperature the current through a conductor is directly proportional to the voltage across it.

The voltage and current are related by the relation

    $V=IR$

where $R$ is the resistance of the conductor

⇒ $R=\frac{V}{I}$

⇒ $R=\frac{10}{2}$

⇒ $R=5$Ω

Hence, the resistance of the conductor is equal to 5Ω.