Physics Y9 Pre-Quiz

What is electricity?

• A form of energy resulting from the flow of charged particles

• The potential difference in energy charges

• The resistance in a circuit

• The measurement of electric power

Which of the following is true about a power source in a circuit?

• It provides current to the circuit.

• It provides potential difference to charges.

• It measures the resistance of the circuit.

• It stores electric energy.

What is electric current?

• The flow of charged particles

• The resistance in a circuit

• The potential difference across a circuit

• The power consumed by the circuit

Which component is used to measure electric current?

• Voltmeter

• Ammeter

• Resistor

• Fuse

What is Ohm’s Law?

• V = IR

• I = VR

• R = VI

• V = I/R

What causes sound?

• Moving particles

• Vibrating particles

• Electrical currents

How does sound travel?

• As a transverse wave

• As a longitudinal wave

• Through electromagnetic radiation

• Through chemical reactions

Which of the following describes a longitudinal wave?

• Waves that move parallel to the direction of propagation

• Waves that move perpendicular to the direction of propagation

• Waves that do not require a medium

• Waves that carry electromagnetic energy

What does the term 'frequency' refer to in sound waves?

• The height of the wave

• The number of waves that pass a point in one second

• The distance between two consecutive peaks

• The speed of the wave

What is resonance?

• The natural frequency of an object

• The amplitude of a sound wave

• The wavelength of a sound wave

• The velocity of a sound wave