15
Write any two practical applications of heating effect of electric current.
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(a) A part of current is consumed into useful work and rest is expended in heat to raise the temperature of gadget.
(any other suitable explanation)
(b)
$W=V \times Q= VIt = IR \times It$
$H = I^2Rt$ / $H = \frac{V^2}{R}t$
(any other suitable explanation)
(b)
$W=V \times Q= VIt = IR \times It$
$H = I^2Rt$ / $H = \frac{V^2}{R}t$