1.

Electromotive force is another name for electrical __________.

2.

For electrical current to flow in a circuit, two things are necessary (select the two from this list).

1. source potential

2. load

3. complete path

4. high resistance

3.

An insulator will conduct [ more/less] current than a conductor.

4.

A zero reference is needed to determine how much __________ exists between a charged object and the reference.

5.

Which actually performs the work: electromotive force or current?

6.

If you have a 10 volt source and a 5 ohm load, with a complete circuit, how much current will flow?

7.

If you change the load to 10 ohms, will more or less current flow?

8.

If you again change the load to 2 ohms, will more or less current flow than in question 6?

9.

Given 230 volts and a 70 amp load, what power is being used?

10.

If an incandescent lamp is rated at 100 watts for 120 volts, what is the current required to operate the lamp (disregard inefficiency).

1.

Electromotive force is another name for electrical potential.

2.

For electrical current to flow in a circuit, two things are necessary (pick the two from this list).

• ? a. source potential

• load

• ? c. complete path

• high resistance

3.

An insulator will conduct (more or less) current than a conductor.

4.

A zero reference is needed to determine how much potential difference exists between a charged object and the reference.