Electric Charge and Forces
In an atom, these have a negative charge.
What is an electron?
This is what flows in an electric current.
What are electrons?
All magnets have a ________ and ________ pole.
What is North and South?
Transfer of electric charges by touching is called this.
What is charging by contact?
In and atom, this has no charge or is neutral.
What is a neutron?
What is a proton?
An electric current will only flow in a path that is _______.
What is closed?
like magnetic poles do this.
What is repel?
The measure of the electrical energy transferred by an electron as it moves from one pint to another in a circuit.
What is voltage?
This is a current carrying wire wrapped around an iron core.
What is an electromagnet?
Electric charges are surrounded by this.
What is an electric field?
The measure of how difficult is it for electrons to flow is called ________ ____________.
What is electric resistance?
Unlike magnetic poles do this.
What is attract?
The magnetic domains in a _________ _______ have their magnetic poles aligned.
What is a permanent magnet?
What is chemical energy?
Like charges do this.
What is repel?
An electric current transfers electrical energy to a _________.
What is a circuit?
A magnet is surrounded by a _________ _________ that exerts a force on other magnets.
What is a magnetic field?
Lightning is an electric __________ between a storm cloud and the ground or another cloud.
What is a discharge?
Increasing the voltage in a circuit also increases this.
What is energy?
Unlike charges do this.
What is attract?
This transforms chemical energy into electrical energy.
What is a battery?
Three materials attracted to magnets are ______, ______ and_________.
What is nickel, cobalt and iron?
An electric current can be produced by the relative motion of a __________ and a ______________.
What is a magnet and wire loop?
What is a circuit that has only one path for electricity to flow?
What is a series circuit?