Question

The resistance of a wire is \( 10 \, \Omega \) and the current passing through it is \( 2 \, \text{A} \). What is the potential difference across the wire?

• A. \( 20 \, \text{V} \)
• B. \( 5 \, \text{V} \)
• C. \( 15 \, \text{V} \)
• D. \( 10 \, \text{V} \)

Hint:

Use Ohm's law \( V = IR \) to calculate the potential difference when you know the current and resistance.

Answer 1

The Correct Option is A

Step 1: Apply Ohm's Law \[V = IR\]Definitions:- \( V \) represents potential difference- \( I \) denotes current- \( R \) signifies resistanceProvided values:- \( I = 2 \, \text{A} \)- \( R = 10 \, \Omega \)Calculation:\[V = 2 \times 10 = 20 \, \text{V}\]Result: The potential difference across the wire is \( 20 \, \text{V} \). This corresponds to option (1).