An electric iron draws a current of 4 A when connected to a 220 V mains. Its resistance must

Options

A. `1000 Omega`
B. `44Omega`
C. `55Omega`
D. none of these

Answer

To find the resistance of the electric iron, we can use Ohm's Law, which states that:

\[ V = I \times R \]

Where:
- \( V \) is the voltage (in volts),
- \( I \) is the current (in amperes),
- \( R \) is the resistance (in ohms).

### Step-by-Step Solution:

1. **Identify the given values:**
- Voltage (\( V \)) = 220 V
- Current (\( I \)) = 4 A

2. **Rearrange Ohm's Law to solve for resistance (\( R \)):**
\[ R = \frac{V}{I} \]

3. **Substitute the known values into the equation:**
\[ R = \frac{220 \, \text{V}}{4 \, \text{A}} \]

4. **Perform the calculation:**
- First, divide 220 by 4:
\[ R = 55 \, \Omega \]

5. **Conclusion:**
The resistance of the electric iron is \( 55 \, \Omega \).