Question

An electric kettle rated at 220 V. 2.2 kW works for 3 hours. Find the energy consumed and the current drawn.

Answer 1

Electrical Energy:

Electrical energy is defined as the energy produced due to the movement of the electrically charged particle.

Step 1: The following data is given in the question:

Voltage, $V=220\text{V}$

Power, $P=2.2\text{kW}$

Kettle worked for 3 hours.

The total energy consumed by the kettle is:

$$\begin{gathered} W_{total}=2.2\times 3 \\ {W}_{total}=6.6\text{kWh} \end{gathered}$$

Step 2: The current drawn by the kettle is given by the following expression:

$$\begin{gathered} I=\frac{P}{V} \\ I=\frac{2.2\times 1000}{220} \\ I=\frac{2200}{220} \\ I=10\text{A} \end{gathered}$$

Hence, the total energy consumed by the kettle is $6.6\text{kWh}$ and current drawn by the kettle is $10\text{A}$.