Question

A conductor is said to have resistance of one ohm if a potential difference of one volt across its terminals causes a current of X ampere to flow through it. What will be the value of X?

(a) 4

(b) 2

(c) 3

(d) 1

Answer 1

Correct option is (d) 1

The best explanation: Ohm’s law states that the potential difference (voltage) across a conductor is proportional to the current through it. The constant of proportionality is called the Resistance(R).

According to Ohm’s law, V = IR (where V is the potential difference between two points which include a resistance R).

–> I = V/R = 1V/1Ω = 1A.