GCSE — Physics Practice
10 auto-graded practice problems. Select an answer, submit, and review the explanation.
Energy
easy
Which of the following describes the conservation of energy?
medium
A car of mass 800 kg is travelling at 20 m/s. What is its kinetic energy?
Electricity
easy
A circuit has a voltage of 12 V across a resistor and a current of 3 A flowing through it. What is the resistance of the resistor?
medium
Two resistors of 6 ohms and 3 ohms are connected in series. What is the total resistance?
Forces
easy
According to Newton\'s third law, when a person pushes against a wall, what is the reaction force?
hard
A skydiver jumps from a plane. At what point do they reach terminal velocity?
Waves
easy
A wave has a frequency of 5 Hz and a wavelength of 2 m. What is its wave speed?
medium
Which type of electromagnetic radiation has the longest wavelength?
Magnetism
medium
How can you increase the strength of an electromagnet?
hard
In a step-up transformer, which of the following is true?