Two resistors are connected in parallel.
The current through the top resistor is 2.0 A.
What is the reading on the ammeter?

Which of the following statements about the current in ammeters X, Y and Z is correct?

A student has what he believes to be a permanent magnet. He wants to find out which end is the magnet’s North pole.

What could he do to find out?

A person wants to install a circuit breaker to protect themselves and their lawnmower from too much current.

Under normal operating conditions, the lawnmower carries 4 A of current.
The manufacturer provides the graph below with the circuit breaker.

What will happen when the current is 4 A, and what will happen if the current rises to 14 A?

Fusion is a type of nuclear reaction.

Which term below is a correct statement about nuclear fusion?

Which of the following options shows the correct speed for electromagnetic waves in a vacuum?

A homeowner buys a security light that switches on automatically when it gets dark.
The security light contains the circuit, shown below.

When it gets dark, what happens to the resistance of the LDR, and what happens to the potential difference across the LDR?

Which of the following processes take place in a non-metal to allow the conduction of thermal energy?

All the light bulbs in the diagrams above are identical. Each one is rated as ‘10 W 230 V’.

In which of the diagrams are all the bulbs working at their normal brightness?

Two cars sit side by side, a black car and a white car. It is Summer.

During the day both cars absorb infrared radiation from the Sun, and during the night, both cars lose energy by emitting infrared radiation.
Which car heats up more quickly during the day, and which car cools down more quickly at night?

An object of mass 150 kg accelerates from a velocity of 5 m/s to a velocity of 10 m/s in the same direction. What is the impulse provided to cause this acceleration?

A 10 Ω and a 30 Ω resistor are connected in series, as shown in the diagram below, making a potential divider circuit.

What would be the reading on the voltmeter?

During a paintball fight, a paint pellet of mass 150g hits a stationary target with a speed of
220m/s. It takes 0.025s from the moment the pellet comes into contact with the wall until it
flattens onto the wall.

What is the force exerted as a result of the paintball “splat”?

Nuclear reactions can release huge amounts of energy.

Which nuclear reaction takes place in the sun and which nuclear reaction takes place in a nuclear power station?

In a common secondary school demonstration, a speaker is placed next to a lighted match.

A loud sound wave is played through the speaker, causing the flame to vibrate.

What type of wave is emitted from the speaker, and in which direction does the flame vibrate?

A student sets up four circuits containing diodes. These circuits are shown below.

Which of the circuits will produce a rectified current through the bulb?

A syringe is half filled with air and sealed. The plunger is then pulled outwards, causing the volume of the gas to increase.
This is done slowly, so that the expansion happens at a constant temperature.
What happens to the pressure of the gas, and to the speed of the air molecules?

A passenger of mass 90 kg is involved in a minor car crash.

The car approaches a solid barrier at 32 m/s. It crashes into the barrer and stops in 0.2s.
Determine the impulse that must be applied to the car to bring it to rest.

The masses and volumes of four different objects are given in the table.
Which of the objects has the lowest density?

A block is shown in the diagram. It has a mass of m.

Which expression, below, could be used to calculate the density of the block?

Three beakers of water are placed on a table. The depth of water in each container is the same.

In which container does the water exert the greatest pressure on the base of the container?

Bluetooth devices rely on electromagnetic radiation to transmit signals.

Which of the following statements is correct?

The Moon is kept in orbit around the Earth by the gravitational force that acts between them.

Which of the following changes to the mass of the Earth and the distance between the Earth and the Moon would result in an increase in the gravitational force?

A student has a collection of metal bars that keep sticking to each other. She suspects that they might be magnets, so she runs a test.

She holds end V of rod 1, near to each end of the two other rods. The ends are shown in the diagram below.

Her results are as follows:

End V:

• Repels end W
• Attracts end X
• Attracts end Y
• Attracts end Z

Which of the metal rods is a magnet?

The planet Uranus has an average orbital radius of 4500 million km.

How long does it take light from the Sun to travel to Uranus?

A whale takes a breath at the surface of the ocean, where the pressure is 1.00 × 10⁵ Pa. It then dives to a depth where the pressure is 1.21 × 10⁵ Pa. The temperature is the same at this depth as it is at the surface.

The whale lets out a bubble of air of volume 50 cm³ . This bubble rises to the surface of the ocean. What is the volume of the bubble when it reaches the surface?

The table gives four combinations of the force applied to a surface and the area over which it acts.

Which row gives the smallest pressure exerted on the surface?

Sound waves travel at a speed of 1500 m/s through a substance. Their wavelength is 5.00 cm.

What is their frequency?

Which of the following statements about the strength of a gravitational field is correct?

The table shows some planetary data for planets in our Solar System.

What is the time taken for light from the Sun to reach the surface of Jupiter?
The speed of light is 3 × 10⁸ m/s.

A fishing boat uses sonar to locate a shoal of fish. The sonar system sends a pulse of sound towards the shoal. When it hits the shoal, the sound wave is reflected and picked up by a detector underneath the ship.

The speed of sound in water is 1500 m/s.

The pulse of sound waves is received 0.48 s after it is emitted.

How far from the boat is the shoal of fish?

A teacher has a hot cup of tea.
Some of the liquid in the cup evaporates.

Choose the line from the table below that correctly describes what happens to the mass and the weight of the tea in the cup.

The diagram shows a ball of bread dough, before and after it has been compressed (had the
air knocked out of it).

What happens to the mass and the weight of the dough when it is compressed?

A dummy, named Starman, dressed in a white racing suit, was launched into space by Elon Musk’s first Falcon Heavy rocket. Starman was sent on a journey towards Mars.

Compared with being on the Earth’s surface, how do Starman’s mass and weight change when he is on his journey to Mars?

A block of an unknown material is shown in the diagram.
What is the density of the block?

An astronaut aboard the International Space Station (ISS) lights a match.

Using ideas about convection, what does the flame look like?

Of the following modes of thermal energy transfer, which one transfers energy at the
greatest speed?

A teacher wants to measure the density of a wooden cylinder.

She measures the radius, height and mass of the cylinder.

Which of the measurements that she has taken are required to calculate the density of the cylinder?

In 1911 Rutherford performed an experiment that provided evidence for the nuclear atom.

Which of the diagrams below best represents this experiment?

An astronaut buys a 5.0 kg tin of Quality Street chocolates on Earth.

She takes that 5.0 kg tin of Quality Street chocolate to the Moon.

What is the mass of the tin of Quality Street chocolate on the Moon?