Question

Two resistors of 2 ohm and 4 ohm are connected in a parallel circuit. If the magnitude of current in the 2 ohm is I, the magnitude of current in the 4 ohm resistor is:

• A. I
• B. I/2
• C. 2/I
• D. I/4

Answer 1

Answer: (B)

I/2

In a parallel circuit the potential differences are same in both the resistors

$Voltage$ $Drop=Current\times Resistance$

Let the current be $I_2$

$\Rightarrow I\times 2=I_2\times 4$

$I_2=\frac{I}{2}$

So the current through $4\Omega$ resistor is $\frac{I}{2}$