Question

In a circuit shown in figure, the heat produced in $3\, ohm$ resistor due to a current flowing in it is $12\, J$. The heat produced in $4 \,ohm$ resistor is

• A. 2 J
• B. 4 J
• C. 64 J
• D. 32 J

Answer 1

Answer: (B)

$12=i_{1}^{2}(3)$
$i_{1}=2$
$\frac{2}{i_{2}}=\frac{6}{3}$
$i_{2}=1$
$H=1^{2} 4=4 \,J$