Question

A part of a circuit is shown in figure. $V_B-V_c$ is equal to $12V.I_1$ is equal to

• A. $1A$
• B. $2A$
• C. $3A$
• D. $4A$

Answer 1

Answer: (C)

If $V_B-V_C=12$ then potential drop across $2\Omega$ resistor between $B$ and $C$ is $2V$ so, current frow from $B$ to $C$
$=\frac{2}{2}=1A$
By junction rule $I_1=3+1=3A$.