A room is maintained at {20^o}C by a heater o | vedclass

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Question

(a) Heat developed by the heater $H = \frac{{{V^2}}}{R}.\frac{t}{J} = \frac{{{{(200)}^2} 	imes t}}{{20 	imes 4.2}}$

Heat conducted by the glass $

Vedclass · Accepted Answer

$15.24$

Vedclass · Answer

(a) Heat developed by the heater $H = \frac{{{V^2}}}{R}.\frac{t}{J} = \frac{{{{(200)}^2} 	imes t}}{{20 	imes 4.2}}$

Heat conducted by the glass $H = \frac{{0.2 	imes 1 	imes (20 - 	heta )t}}{{0.002}}$

Hence $\frac{{{{(200)}^2} 	imes t}}{{20 	imes 4.2}} = \frac{{0.2 	imes (20 - 	heta )t}}{{0.002}}$$ \Rightarrow 	heta = {15.24^o}C$

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