_______ is the movement of electrons from one atom to another.
A/an _______ is a unit of the amount of current flow.
A/an _______ is a unit of electrical pressure.
A/an _______ involves a copper-to-copper connection whereas a short-to-round involves a copper-to-steel connection.
_______ law states, “The current flowing into any junction of an electrical circuit is equal to the current flowing out of that junction.”
If 12 volts are being applied to a resistance of 3 ohms, _______ amperes will flow.
If the voltage increases in a circuit and the resistance remains the same, the current _______.
The sum of the voltage drops in a series circuit equals the _______.
If the resistance and the voltage are known, the formula for finding the current is _______.
Respond to the following based on your reading.

Where are electromagnets found in an automobile?
What happens to the current as the resistance increases?
Use Ohm’s law (E = IR) to find the current in amperes for four different resistance values, and then compare the answers.

When E = 14 V and R = 1 Ω, the current is _________ amperes.
When E = 14 V and R = 4 Ω, the current is _________ amperes.
When E = 14 V and R = 8 Ω, the current is _________ amperes.
When E = 14 V and R = 12 Ω, the current is _________ amperes.



Answers:
1. Electricity
2. ampere
3. volt
4. short-to-voltage
5. Kirchhoff’s current
6. 4
7. increases
8. source voltage
9. I = E ÷ R
10. An electromagnet can be made stronger by increasing the current flowing through it, adding more turns of the copper wire, or adding a soft iron core to the turns of the copper wire. Electromagnets can be found in automobile electrical systems, speakers, and they play a major role in electric engines.
11. The current decreases as the resistance increases when the power supply is constant.
12. 14
13. 3.5
14. 1.75
15. 1.1667