BASIC ELECTRICITY

It is a difference in electric potential energy in joule/coulomb.

• A. Circuit

• B. Current

• C. Resistance

• D. Voltage

What is the SI unit of voltage?

• A. ampere

• B. ohm

• C. volt

• D. watt

It is the number of charges passing through a wire per unit time.

• A. Current

• B. Power

• C. Resistance

• D. Voltage

Tags

NGSS.HS-PS2-5

What is the SI unit of current?

• A. ampere

• B. ohm

• C. volt

• D. watt

It is the opposition to the flow of electric charges as they travel through a conducting wire.

• A. Circuit

• B. Current

• C. Resistance

• D. Voltage

What is the SI unit of resistance?

• A. ampere

• B. ohm

• C. volt

• D. watt

Which of the following is the correct statement of Ohm’s Law?

• A. When current increases in a circuit, voltage increases and resistance increases.

• B. When current increases in a circuit, voltage decreases and resistance increases.

• C. When current decreases in a circuit, voltage decreases and resistance increases.

• D. When current increases in a circuit, voltage increases while resistance remains constant.

It supplies energy in an electric circuit.

• A. Load

• B. Switch

• C. Voltage source

• D. Conducting wire

It converts electrical energy into different forms of energy such as light, heat, or sound in an electric circuit.

• A. Load

• B. Switch

• C. Voltage source

• D. Conducting wire

Tags

NGSS.HS-PS3-3

A water heater has a resistance of 22 Ω connected to a 220-V voltage source. What is the needed current to operate the heater?

• A. 5 A B.

• 7 A

• C. 8 A

• D. 10 A