Energy and electricity Flashcards
(9 cards)
What particles carry an electric charge in electric wires?
Electrons
Electrons are negatively charged particles that flow to create an electric current.
What is an electric current?
A flow of charge, specifically a flow of electrons in a wire
Electric current is measured in amperes (A).
What is required for an electric current to flow?
- Something to transfer energy to the electrons
- A complete path for the electrons to flow through
This complete path is known as a circuit.
What components are needed to create an electromagnet?
- Insulated wire
- Nail
- Connection leads
- Crocodile clips
- Paper clips
- Tape
The nail acts as a core to enhance the magnetic field created by the wire.
What is the first step in creating an electromagnet?
Wind the wire around the nail as many times as you can, leaving the ends free
The more turns of wire, the stronger the electromagnet will be.
What should be done to hold the wire turns in place when making an electromagnet?
Stick tape over the coil
This prevents the wire from unwinding.
How do you connect the wire to a battery when making an electromagnet?
Attach the ends of the wire to leads
The leads facilitate the connection to the battery.
What experiment can you perform with the electromagnet?
See how many paper clips you can pick up
This demonstrates the magnetic effect of the electromagnet.
Fill in the blank: An electric current is a flow of _______.
charge
Charge can be carried by electrons or ions.
