Question

How much current flows (I) in an electric fan having a resistance of 15 Ω

 when connected a 220 V line? Find the power?

Answer 1

According to the Ohm's law:

$$I = \dfrac{U}{R}$$

where $U = 220V$ is the voltage accross $R = 10\Omega$, and $I$ is the current that flows through $R$. Thus, obtain:

$$I =\dfrac{220V}{10\Omega} = 22A$$

Answer. 22A.