Electricity and Magnetism

Block Number

• 1st
• 2nd
• 4th

What is the charge of an electron?

• negative
• positive
• neutral

What is the charge of a proton?

• negative
• positive
• neutral

What subatomic particle hops on and off of atoms causing an electric charge?

• protons
• neutrons
• electrons

How would I turn on the electric current within a circuit?

• open the circuit
• close the circuit
• reverse the circuit

What is the primary source of Earth's magnetic field?

• Solar radiation
• Iron core
• Earth's rotation
• magnetic rocks in the crust

Which of the following best describes static electricity?

• The flow of electric charge in a circuit
• The attraction or repulsion of objects with an electric charge
• The conversion of electrical energy into other forms of energy
• The production of electric current using a generator

What is the direction of the electric current in a circuit?

• From positive to negative
• From negative to positive
• Clockwise
• Counterclockwise

What is the relationship between the number of coils and the strength of the magnetic field in an electromagnet?

• More coils result in a stronger magnetic field
• Less coils result in a stronger magnetic field
• The number of coils has no effect on the magnetic field
• The magnetic field only depends on the material of the coil

When a magnet is cut into two pieces, what happens to the magnetic properties of each piece?

• Both pieces become stronger magnets, each with a north and south pole.
• Both pieces become weaker magnets, each with a north and south pole.
• One piece becomes a magnet, and the other loses its magnetic properties
• Both pieces lose their magnetic properties