Electricity Test 2019

What are three parts of an electric circuit?

• energy source, generator, conducting wires

• energy source, conducting wires, transformer

• transformer, electromagnet, conducting wires

• conducting wires, electric motors, fossil fuels

Which of the following is NOT a source of energy in an electric circuit?

• batteries

• solar cells

• outlets

• switch

What kind of energy is in fuels that are burned at power plants?

• chemical

• electrical

• sound

• heat

What is a complete, unbroken path through which electricity flows?

• electromagnet

• generator

• energy source

• electric circuit

Electric circuits must have something to conduct the electricity. What usually conducts the electricity in a circuit?

• the light bulb

• the switch

• the wires

• the battery

A light bulb circuit is not lit up. What is true about this circuit?

• It is open.

• It is closed.

What do you add to a circuit that will control whether the circuit is open or closed?

• an electromagnet

• a switch

• a generator

• a motor

What kind of energy do batteries store?

• nuclear

• mechanical

• chemical

• kinetic

Which of the following energy transformations shows what happens when a light bulb lights up?

• chemical energy in a battery --> electrical energy in the circuit-> light and heat energy in the light bulb

• electrical energy in the battery --> chemical energy in the circuit --> light and heat energy in the lightbulb

• electrical energy in the circuit --> light energy in the light bulb --> heat energy in the wires

• light energy in the batteries --> chemical energy in the light bulb --> heat energy in the circuit

What is the energy transformation when sound is produced in an electric circuit?

• heat energy in a battery --> chemical energy in a circuit --> sound energy from a cell phone

• chemical energy in a battery --> electrical energy in a circuit --> sound energy in a cell phone

• chemical energy in a battery --> heat energy in a circuit --> sound energy from a cell phone

• electrical energy in a circuit --> chemical energy in a battery --> sound energy in a cell phone