Question

A resistor of resistance \(20\,\Omega\) is connected across a \(10\,V\) battery. The current flowing through the resistor is

• A. \(0.2\,A\)
• B. \(0.5\,A\)
• C. \(2\,A\)
• D. \(5\,A\)

Hint:

Ohm's Law: \[ \boxed{V=IR} \] Useful forms: \[ \boxed{I=\frac{V}{R}} \] \[ \boxed{R=\frac{V}{I}} \] One of the most important formulas in Current Electricity.

Answer 1

The Correct Option is B

Step 1: Recall Ohm's Law. \[ V=IR \] Therefore, \[ I=\frac{V}{R} \]

Step 2: Substitute the given values. \[ I=\frac{10}{20} \] \[ I=0.5\,A \]

Step 3: Identify the correct option. \[ \boxed{I=0.5\,A} \] Therefore, \[ \boxed{\text{(B)}} \] is the correct answer.