Chapter 6, Problem 50R

To determine

To Draw: A circuit diagram showing the way that a stereo, a TV, and a computer can be connected to a single source of voltage difference such that turning off one appliance does not turn off all the others, including a circuit breaker to protect the appliances.

Explanation of Solution

Introduction:

The devices- a stereo, a TV, and a computer connected should be connected in parallel to the single source of voltage difference, so that on turning off one of the appliances, the others are not turned off.

The parallel circuit should contain three branches, one branch for each device. Because all the branches connect at the same 2 points of the circuit, the difference in voltage is equal in each branch. When one branch of the parallel circuit is opened, such as when one of the devices is turned off, the current continues through the other two branches.

A circuit breaker is connected in series with the voltage source such that if the current is too large in the circuit it switches off protecting all the appliances.

The circuit diagram:

  

Conclusion:

A circuit breaker is connected in series with the voltage source to protect the entire appliance from overheating.