Question

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

• A. $1000\Omega$
• B. $44\Omega$
• C. $55\Omega$
• D. none of these

Answer 1

The correct option is C $55\Omega$

Given : $V=220$ volts $I=4$ A

$\therefore$ Resistance $R=\frac{V}{I}=\frac{220}{4}=55\Omega$