Question

How much current will an electric geyser draw from a $220V$ source, if the resistance of the geyser is $110\Omega$?

• A. $4A$
• B. $2A$
• C. $1A$
• D. $8A$

Answer 1

The correct option is B $2A$

Ohm’s Law states that the current(I) flowing through a given metallic wire in an electric circuit is directly proportional to the potential difference V across the ends of it, provided its temperature remains the same.
$I=\left(1/R\right)\times V$
R is a constant for a given material at a given temperature and is called its resistance.
In the question, $V=220VandR=110\Omega$
$Current\left(I\right)=\frac{220}{10}=2Ampere$