Three $2 \,\Omega$ resistors, $A, B$ and $C,$ are connected as shown in figure. Each of them dissipates energy and can withstand a maximum power of $18 \,W$ without melting. Find the maximum current that can flow through the three resistors.
Three $2 \,\Omega$ resistors, $A, B$ and $C,$ are connected as shown in figure. Each of them dissipates energy and can withstand a maximum power of $18 \,W$ without melting. Find the maximum current that can flow through the three resistors.
$P=I^{2} R$
Or $I^{2}=P / R=18 / 2=9$
Or $I=3 A$
Therefore, current through $B$ and $C$
$I=3 / 2=1.5 A$
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