Physics Quiz: Magnetism and Electricity

What did Hans Christian Oersted discover in 1820?

• The connection between electricity and magnetism

• The strength of Earth's magnetic field

• The relationship between north and south poles

• The molecular properties of magnets

What is the purpose of a compass?

• To generate electricity

• To determine the direction of Earth's magnetic field

• To attract or repel magnets

• To measure the strength of a magnetic field

How are magnetic field lines represented?

• As straight lines pointing from north to south

• As circles with the wire at their center

• As parallel lines in the direction of the current

• As curved lines following the shape of a magnet

What is the unit used to measure magnetic fields?

• Meter

• Tesla

• Newton

• Ampere

What happens when a current runs through a wire?

• The wire creates a magnetic field

• The wire becomes electrically charged

• The wire heats up

• The wire becomes magnetized

What is the first right-hand rule used for?

• Measuring the current in a wire

• Finding the strength of a magnetic field

• Calculating the force on a wire

• Determining the direction of the magnetic field

What does the second right-hand rule help determine?

• The direction of the magnetic field

• The direction of the current

• The force on a wire

• The strength of the magnetic field

What factors affect the magnitude of the force from a magnetic field on a wire?

• The current, length of the wire, magnetic field strength, and angle

• The voltage, resistance, temperature, and time

• The mass, velocity, acceleration, and displacement

• The frequency, wavelength, amplitude, and phase

How does Earth's magnetic field protect us from solar radiation?

• By generating electricity

• By repelling charged particles

• By creating a force on the Sun

• By deflecting charged particles

What is the equation for the force of a magnetic field on a single charged particle?

• F = qvBsinθ

• F = ma

• F = PE

• F = mv^2/r