An electric heater rated 220 V and 550 V is connected to AC mains. The current drawn by it is

Options

A. 0.8 A
B. 2.5 A
C. 0.4 A
D. 1.25 A

Explanation

To find the current drawn by the electric heater rated at 220 V and 550 W, we can use the formula for electrical power:

### Step 1: Write the formula for power
The power consumed by an electrical device is given by the formula:
\[ P = V \times I \]
where:
- \( P \) is the power in watts (W),
- \( V \) is the voltage in volts (V),
- \( I \) is the current in amperes (A).

### Step 2: Substitute the known values
From the question, we know:
- Power \( P = 550 \, \text{W} \)
- Voltage \( V = 220 \, \text{V} \)

Now, substituting these values into the power formula:
\[ 550 = 220 \times I \]

### Step 3: Solve for current \( I \)
To find the current \( I \), we can rearrange the equation:
\[ I = \frac{P}{V} \]
Substituting the values we have:
\[ I = \frac{550}{220} \]

### Step 4: Calculate the current
Now, performing the division:
\[ I = \frac{550}{220} = 2.5 \, \text{A} \]

### Conclusion
The current drawn by the electric heater is:
\[ I = 2.5 \, \text{A} \]

### Final Answer
The correct option is \( 2.5 \, \text{A} \).

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