Dancing Foil & Lenz's Cannon

Front

What is electric current?

Back

A flow of charge.

Front

What is the direction of current in a circuit?

Back

From positive to negative terminal.

Front

What is the definition of magnetic field?

Back

A region around a magnetic material or a moving electric charge within which the force of magnetism acts.

Front

What is Lenz's Law?

Back

The direction of induced current is such that it opposes the change in magnetic flux that produced it.

Front

What is the right-hand rule in electromagnetism?

Back

A method to determine the direction of the magnetic field or force; if you point your thumb in the direction of current, your fingers curl in the direction of the magnetic field.

Front

What is a solenoid?

Back

A coil of wire that produces a magnetic field when carrying an electric current.

Front

What is the difference between AC and DC current?

Back

AC (Alternating Current) changes direction periodically, while DC (Direct Current) flows in one direction.

Front

What is the role of a magnetic field in electric motors?

Back

It interacts with the electric current to produce rotational motion.

Front

What is electromagnetic induction?

Back

The process of generating electric current from a changing magnetic field.

Front

What is the formula for calculating electric power?

Back

Power (P) = Voltage (V) x Current (I).