Question

An electric bulb of resistance $480\Omega$ is connected to $220V$. Find electric energy consumed in $10s$.

• A. $1000J$
• B. $9600J$
• C. $1008.3J$
• D. $1118.7J$

Answer 1

The correct option is C $1008.3J$

Given,

$R=480\Omega V=220Vt=10s$

$E=\frac{V^{2}t}{R}$

$E=\frac{{\left(200\right)}^2\times 10}{480}=1008.3J$