Electricity Test

Which bulb(s) will light up in the circuit below?

• light bulb #1 only

• none will light up

• light bulbs #2 and #3 only

• light bulb #2 only

Which bulb will shine the brightest?

• A

• B

• E

• They all will have equal brightness

Which bulbs are NOT connected in series with one another?

• A and B

• D and E

• B and C

• E and F

Which circuit would this most likely be?

• series

• parallel

• series parallel

• series and parallel

A glass rod is rubbed with silk and becomes positively charged. Which of the following is the most reasonable explanation?

• protons are added to the silk.

• protons are removed from the silk.

• the silk remains neutral.

• electrons are removed from the rod.

If a simple circuit has one resistor of 3 ohms and a current of 3 amps, how many volts is the power source?

• 3 volts

• 6 volts

• 9 volts

• 19 volts

(a)   is the opposition to the flow of current in a circuit.

• Voltage

• Resistance
• Ampere

Suppose you rub an inflated balloon on a carpet, hold the balloon next to a wall, and discover that it “sticks” to the wall. Why did the balloon stick to the wall?

• Like charges on the balloon and wall cause an attraction between the two

• Balloons contain an atomic property that allows them to cling to other objects

• Excess charge builds up on the balloon and electrostatic forces allow the balloon and wall to be attracted to one another because they are oppositely charged.

• All of the above

Potential difference is measured in

• coulombs.

• joules.

• volts.

• amperes.

An electrician wires the entire kitchen in your home in series. Included in the circuit are the refrigerator, overhead electric lights, and the outlets to which the toaster and the microwave oven are connected. In order to keep the refrigerator operating properly, what would have to happen with the other electrical appliances and lights?

• All appliances would need to be on

• All appliances would need to be off

• The toaster and microwave would need to be unplugged

• None of the above situations would keep the refrigerator running properly