What is Voltage?

What flows in an electric circuit?

• Copper atoms

• Protons

• Electrons

• Water

Electrical current can be compared to water flowing in a pipe. What is voltage compared to?

• How fast the water flows

• The water pressure

• The knob that turns the water on

If you want a light bulb to be brighter, how should you connect 2 batteries so the voltage is "boosted"?

• In Series

• In Parallel

• Either way -- 2 batteries will boost the voltage

Voltage and Volts are different

• True

• False

How is voltage different than volts?

• Voltage is what is being measured. Volts are the units

• Multimeters measure in units of voltage.

If we increased the voltage of the battery from 1.5V to 9.0V, what would happen to the brightness of the bulb?

• It would decrease

• It would increase

• It would not change

In the United States, what type of AC voltage do we use?

• 110 V - 127 V

• 220 V - 240 V

• Below 110 V

• Above 240 V

What is the input voltage rating for the power adapter?

• 1.0 A

• 50/60 Hz

• 100 - 240 V