Question

An electric heater draws a current of 10 A when connected to 250 V mains. The resistance of the heating element of the heater is:

Options

• 20 Ω

• 22.5 Ω

• 25 Ω

• 40 Ω

Answer 1

25 Ω

Explanation:

Using Ohm's law, $$R = \frac{V}{I}$$

$$= \frac{250}{10}$$

$$= 25\ \Omega$$