GCSE Combined Science Physics

Question 1

What is the unit of measurement for electrical resistance?

Accepted Answer

Ohms (Ω)

Answer

Volts (V)

Answer

Amps (A)

Answer

Watts (W)

Question 2

A force of 200 N is applied to an area of 0.5 m². What is the pressure?

Accepted Answer

400 Pa

Answer

100 Pa

Answer

200 Pa

Answer

250 Pa

Question 3

Which type of electromagnetic wave has the shortest wavelength?

Accepted Answer

Gamma rays

Answer

Radio waves

Answer

Visible light

Answer

Ultraviolet

Question 4

What is the law of conservation of energy?

Accepted Answer

Energy cannot be created or destroyed, only transferred between stores

Answer

Energy can be created from nothing

Answer

Energy can be destroyed but not created

Answer

Energy always increases in a closed system

Question 5

A car accelerates from rest to 20 m/s in 5 seconds. What is its acceleration?

Accepted Answer

4 m/s²

Answer

2 m/s²

Answer

5 m/s²

Answer

100 m/s²

Question 6

What happens to the current in a series circuit when more resistors are added?

Accepted Answer

The current decreases

Answer

The current increases

Answer

The current stays the same

Answer

The current becomes alternating