A-Level Physics 2

Question 1

What is the SI unit of electric potential?

Accepted Answer

Volt

Answer

Ampere

Answer

Ohm

Answer

Coulomb

Question 2

In a nuclear reaction, what does the equation E = mc² represent?

Accepted Answer

The energy equivalent of mass, showing that mass and energy are interchangeable

Answer

The kinetic energy of the nucleus

Answer

The gravitational potential energy

Answer

The binding energy per nucleon only

Question 3

What is the work-energy theorem as applied in Singapore A-Level Physics?

Accepted Answer

The net work done on a body equals the change in its kinetic energy

Answer

Work done equals force times time

Answer

Work done equals mass times acceleration

Answer

Work is always conserved

Question 4

What is Faraday's law of electromagnetic induction?

Accepted Answer

The induced EMF is equal to the rate of change of magnetic flux linkage

Answer

EMF is proportional to the current flowing

Answer

The magnetic field is always constant

Answer

EMF is proportional to the resistance of the circuit

Question 5

What happens to the resistance of a metallic conductor as its temperature increases?

Accepted Answer

Resistance increases because increased thermal vibrations impede electron flow

Answer

Resistance decreases

Answer

Resistance stays the same

Answer

Resistance first increases then decreases

Question 6

What is the difference between a stationary wave and a progressive wave?

Accepted Answer

Stationary waves do not transfer energy; progressive waves transfer energy in the direction of travel

Answer

Stationary waves transfer energy; progressive waves do not

Answer

There is no difference

Answer

Progressive waves have nodes and antinodes