An electric heater of resistance 8 , Omega dr | vedclass

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Question

(C) The rate at which heat is developed in an electric heater is defined as its electric power $(P)$.The formula for electric power is given by:$P = I

Vedclass · Accepted Answer

$1800$

Vedclass · Answer

(C) The rate at which heat is developed in an electric heater is defined as its electric power $(P)$.The formula for electric power is given by:$P = I^2 R$Given:Resistance $(R)$ = $8 \, \Omega$Current $(I)$ = $15 \, A$Substituting the values into the formula:$P = (15)^2 	imes 8$$P = 225 	imes 8$$P = 1800 \, W$Since $1 \, W = 1 \, J/s$,the rate at which heat is developed is $1800 \, J/s$ or $1800 \, W$.

An electric heater of resistance $8 \, \Omega$ draws $15 \, A$ from the service mains for $2$ hours. Calculate the rate at which heat is developed in the heater (in $W$).

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