Question

If a wire has resistance 200 Ω & the current through it is 0.5 A, the potential difference across the wire must be ___________

Answer 1

hope it is helpful for you

Answer 2

Answer:

If a wire has a resistance 200 Ω & the current through it is 0.5 A, the potential difference across the wire must be $100\ V$

Explanation:

• According to Ohm's law,

        $\text V \propto \text I$

         or

        $\text V =\text { IR }$ ...(1)

        Where V is the voltage applied,

                     I is the current flowing through the conductor, and

                     R is the resistance.

• That is the current flowing through a conductor is directly proportional to the voltage applied across the terminals.

In the question, it is given that,

$\text I = 0.5 A$

$\text R =200\ \Omega$

Substitute these values into equation (1)

$\text V = 0.5\times200 = 100\ V$