What is a magnet that has an iron core wrapped in wire that carries electric current.
100
What is a conductor?
What is something through which negative charges can move easily.
100
What is an electric circuit
What is a closed path that electric current follows.
100
Define static electricity.
What is the build up of electric charges in one place.
100
What is an example of static electricity?
What is brushing hair, clothes out of dryer, shocked when touch metal.
200
What is one one to make an electric magnet stronger
What is adding more coils of wire to it.
200
What is an insulator?
What is something that resists the flow of electricity.
200
How is an electric current different from an electric circuit?
What is an electric current is a flow of electric charges, while a circuit is a path that electric charges follow.
200
Why is matter usually neutral?
What is because positive and negative charges cancel each other out, most of the time matter has a balance of positive and negative charges.
200
Which of the following is the BEST choice for conducting electricity through a circuit?
a. pencil lead
b. wool yarn
c. copper wire
d. plastic cord
What is c. copper wire
300
An electromagnet is a magnet only if _________ _________ is passing through its wire coil.
What is electric current
300
What is an example of a good conductor and good insulator?
What is metal and foam.
300
How do you turn off a series circuit?
What is you would disconnect the circuit or flip the off switch, causing the whole circuit to turn off.
300
When two charges are rubbed together, what kind of charge gets moved from one to the other?
What is negative charges.
300
Rubber is to insulator as
a. copper is to conductor
b. plastic is to conductor
c. steel is to conductor
d. cotton is to plastic
What is a. copper is to conductor
400
If a person adds a second battery to an electromagnet what happens to the stregnth of that magent?
What is it gets stronger or increases.
400
Name two places you can find copper wiring.
What is cell phones and televisions.
400
What is the difference between series circuits and parallel cicuits?
What is a series circuit only has one path while a parallel has multiple paths.
400
In what direction does an electric field extend from a charge?
What is in all directions.
400
In which of the following ways are an electromagnet and a bar magnet alike?
a. they both carry a current.
b. they attract each other.
c. they both generate electricity.
d. both have magnetic fields.
What is d. both have magnetic fields.
500
What do electric changes and magnets have in common?
What is they produce a force that pushes and pulls.
500
How do insulators keep people safe? Name one place you have seen an insulator.
What is keeps people from touching bare wires. You can often find insulators on power lines.
500
What happens when you add a bulb to a string of lights connected to a parallel cicuit?
What is The lights will stay on, the current can take another path.
500
What happens when an two objects have the same charge?
What is they will push away from each other.
500
Which kind of magnet carries a current?
a. permanent magnet
b. electromagnet
c. bar magnet
d. horseshoe magnet