In the following circuit, 1 ,Omega resistor d | vedclass

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Question

(a)

From given circuit, if $i=$ circuit current, then

$V=i R_{ eq } \Rightarrow i=\frac{10}{4}=2.5 \,A$

So, power dissipated by circuit is

Vedclass · Accepted Answer

$P$

Vedclass · Answer

(a)

From given circuit, if $i=$ circuit current, then

$V=i R_{ eq } \Rightarrow i=\frac{10}{4}=2.5 \,A$

So, power dissipated by circuit is

$P=i^2 R=(2.5)^2 	imes 1=\frac{25}{4} W$

When $1 \,\Omega$ resistor is replaced by a $9 \,\Omega$ resistor, then power dissipated in $9\, \Omega$ resistor is

$P^{\prime}=\left(\frac{10}{12}ight)^2 	imes(9)$

$=\frac{100 	imes 9}{12 	imes 12}=\frac{25}{4} \,W$

So, $P^{\prime}=P$

In the following circuit, $1 \,\Omega$ resistor dissipates power $P$. If the resistor is replaced by $9 \,\Omega$, the power dissipated in it is

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