Question

The potential difference between the two points of a wire carrying 2 amperes current is 0.1 volt. Calculate the resistance between these points.

• A. 0.05
• B. 0.02
• C. 0.01
• D. zero

Answer 1

The correct option is (A) 0.05

Step 1, Given data

Potential difference = 0.1 V

Current = 2 A

Step 2, Finding the resistance

From the Ohm's Law

We know,

$V=IR$ Where, V = voltage, I = Current, R = Resistance

Putting all the values

$0.1=2\times R$

$Or,R=\frac{0.1}{2}=0.05ohm$

Hence the resistance = 0.05 ohm.