Question

A dynamo develops $0.5A$ at $6V$. Find the energy which it generates in $1s$

Answer 1

Power developed,

$P=VI$

$P$; developed power

$V$; voltage

$I$; current

$\Rightarrow P=0.5\times 6$

$\Rightarrow P=3W$

Now energy,

$E=Pt$

$t=1s$; time

$\Rightarrow E=3\times 1$

$\Rightarrow E=1J$