1st Semester Exam Review 2024 Goff

Front

What is required for a magnet to generate electricity in a coil of wire?

Back

The magnet needs to be in motion, not stationary.

Front

How can the strength of a magnetic field created by current in a wire be increased?

Back

By wrapping the wire into a coil many times.

Front

What type of waves are both water waves and electromagnetic waves?

Back

They are examples of transverse waves.

Front

What happens to the pitch of a sound as the wavelength increases?

Back

The pitch decreases.

Front

Which pulley system requires the least amount of effort force to lift a weight?

Back

Pulley system Z.

Front

What is the principle behind electromagnetic induction?

Back

A changing magnetic field can induce an electric current in a conductor.

Front

What is the relationship between current, voltage, and resistance in a circuit?

Back

Ohm's Law: V = I * R (Voltage = Current x Resistance).

Front

What is the definition of a transverse wave?

Back

A wave in which the motion of the medium is perpendicular to the direction of the wave's travel.

Front

What is the effect of increasing the number of coils in an electromagnet?

Back

It increases the strength of the magnetic field.

Front

What is sound wave frequency related to?

Back

It is related to the pitch of the sound; higher frequency means higher pitch.