Chapter 6, Problem 7STP

To determine

The similarity foreach light bulb.

Explanation of Solution

Introduction:

Circuits which contain two or more branches for current are called parallel circuits.

In a parallel circuit, all branches connect to the same two points in a circuit. Therefore, the voltage difference in each branch of a parallel circuit is same. Hence in the given diagram, the voltage difference for both, the $\text{15 }\Omega$ light bulb and the $\text{8 }\Omega$ light bulb is $12\text{ V}$ .

Conclusion:

Parallel circuits are used mostly in houses so that individual devices can be turned off without affecting the entire circuit.