Electric Circuits Review Question Preview (ID: 38860)
Review For Unit 3 Test.
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What are the three main parts of a circuit?
a) energy source, path, load
b) Energy source, path, gravity
c) load, path, switch
d) path, energy, protons
What is a current?
a) A continuous flow of electrons
b) A continuous flow of protons
c) A continuous flow of neutrons
d) gravitational attraction
How does the switch need to be for the circuit to work?
a) The switch needs to be open.
b) The switch needs to be connected to only one wire.
c) The switch needs to be closed.
d) The switch has to be touching the battery.
Which is a correct list of conductors?
a) steel, wool, copper, paper
b) copper, wood, plastic, silver
c) aluminum, copper, steel, plastic
d) steel, copper, aluminum, silver
What is the purpose of the plastic covering wires in circuits?
a) The plastic is a conductor and will keep the charges from flowing.
b) The plastic is an insulator which helps keep you from getting shocked.
c) The plastic is a conductor which helps keep you from getting shocked.
d) The plastic makes the wire colorful.
If you have more than one battery in a circuit, how should the batteries be placed for the circuit to work?
a) The positive terminal of one battery should be connected to the positive terminal of the other battery.
b) The negative terminal of one battery should be connected to the negative terminal of the other battery.
c) The positive terminal of one battery must be connected to the negative end of the other battery.
d) There should be only one battery used.
In a parallel circuit with more than one bulb, what will happen if one bulb goes out?
a) The other two bulbs will continue to stay lit because the electrons are flowing along more than one path.
b) None of the bulbs will remain lit because the charges will not flow any longer.
c) One bulb will stay lit and one bulb will go out because the charges will be divided.
d) None of the bulbs will work until you replace the one that is no longer lit.
What is an example of static electricity and electric discharge?
a) a light switch that is turned on runs a stove
b) water flowing in a dam
c) lightning in a storm
d) a battery connected to a wire to cause a light bulb to light up
What is the energy source in a simple circuit?
a) a buzzer
b) a wire
c) a switch
d) a dry cell or battery
In what kind of circuit does the electricity flow along more than one path?
a) a parallel circuit
b) a series circuit
c) a switch circuit
d) a really big circuit
In a series circuit with more than one bulb, what will happen if one of the bulbs goes out?
a) The other bulbs will go out as well because there is only one path for the electrons to flow.
b) Every other bulb will remain lit because the charges will skip over the unlit ones.
c) The other bulbs will remain lit because the electrons are flowing on different paths.
d) All of the bulbs will go out even though the charges are flowing on different paths.
Which part of the atom has a negative charge?
a) electron
b) proton
c) neutron
d) nucleus
After you charge a balloon, why does rice cereal or bits of paper stick to a balloon?
a) Since the balloon has been charged, the balloon will now have more protons than the cereal or bits of paper.
b) Since the balloon has been charged, the balloon will now have more electrons than the cereal or bits of paper.
c) Since the balloon has been charged, the balloon will now have more neutrons than the cereal or bits of paper.
d) A balloon can not be charged.
What does the Law of Electric Charges say?
a) Opposite charges repel and like charges attract.
b) Charges can be distributed equally to objects.
c) Opposite charges attract and like charges repel.
d) Charges never are attracted to each other.
In an electrical circuit with a battery and a bulb, what energy conversion takes place?
a) Chemical energy converts to electrical energy, light energy, and thermal energy.
b) Electrical energy converts to chemical energy, light energy, and thermal energy.
c) Chemical energy coverts to electrical energy, sound energy, and mechanical energy.
d) Light energy converts to chemical energy, electrical energy, and thermal energy.
If the switch of a circuit is opened, what happens to the electrons?
a) The electrons will continue flowing.
b) The electrons will hop over the opening.
c) The electrons will stop flowing causing the current to stop.
d) The electrons will run away.
Which are examples of insulators?
a) rubber, glass, wood, steel
b) plastic, copper, brick, fabric
c) rubber, plastic, paper, glass
d) paper, steel, rubber, brick
Which part of the atom has a positive charge?
a) proton
b) electron
c) neutron
d) nucleus
How many paths are there for charges to flow on in a series circuit?
a) one
b) two
c) three
d) four
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