Hard Physics Questions - Physics Edexcel IGCSE

Define "a pole of a magnet"

• Where the magnetic forces are strongest.

• One end of a magnet - either north or south

• The part of a magnet where magnetic field lines come from

Describe what is meant by the ‘direction’ of a magnetic field at a point

• The direction of the force that would act on a north pole placed at that point.

• The opposite way to which the arrows point

• The direction of the force that would act on a south pole placed at that point.

• The way in which the field lines go

The force experienced by current-carrying wires in magnetic fields is caused by...

• The Doppler effect

• The motor effect

• the current effect

• the Primakoff effect

What are the two names for the number of protons in an atom?

• proton number

• atomic number

• nucleon number

• mass number

• aton number

What are the two names for the number of protons and neutrons in an atom?

• proton number

• atomic number

• nucleon number

• mass number

• Protron number

Which frequency is ultrasound?

• Above 20,000 Hz

• 20 Hz

• 5,000 Hz

• Under 50 Hz

What is the average speed of sound in air?

• 320 to 340 m/s

• 200-210 m/s

• 14-21 m/s

• 7800-8200 m/s

What is 1 Volt?

• 1 Joule/Coulomb

• 1 Joule/second

• 1 Coulomb/second

• 1 Amp/Coulomb

What is 1 Watt?

• 1 Joule/second

• 1 Joule/Coulomb

• 1 Coulomb/second

• 1 Amp/second

What is 1 Amp?

• 1 Joule/second

• 1 Joule/Coulomb

• 1 Coulomb/second

• 1 Volt/second