Chapter 6.2, Problem 10R

To determine

To compare and contrast: Current through a circuit and static discharge.

Explanation of Solution

Introduction:

The accumulation of excess electric charge on an object causes static electricity. Current in a circuit is due to flow of electrons from a lower voltage to a higher voltage.

Similarities between Current through a circuit and static discharge are as follows:

1. Both are a form of electricity.
2. Both develop electric current due to movement of electrons.

Differences between Current through a circuit and static discharge are as follows:

1. Static electricity is caused by the accumulation of excess electrons on the surface of an object while current through a circuit is due to flow of electrons.
2. Static electricity is produced between two objects when they are rubbed together while current in a circuit flows when there is a voltage difference.
3. Static electricity is usually uncontrolled while current in a circuit can be controlled.

Conclusion:

Lightning strokes is an example of static electricity while current used in running a fan is an example of current in a circuit.