5 marksFoundation
The diagram shows a circuit.
.1Name component X.
[1 mark] .2The lamp is off. Explain why the lamp lights when the switch is closed.
[2 marks] .3When the switch is closed, the reading on X is 0.20 A.
Calculate the charge that flows through the lamp in 60 s.
[2 marks] 4 marksFoundation
A student measures a rectangular block. It is 5.0 cm long, 4.0 cm wide and 10.0 cm high. Its mass is 540 g.
.1Calculate the volume of the block.
[1 mark] .2Calculate the density of the block in g/cm³.
[2 marks] .3In which state are the particles close together in a regular pattern?
[1 mark] 5 marksFoundation
A student drops a ball of mass 0.20 kg from a height of 1.5 m.
Gravitational field strength = 9.8 N/kg.
.1Which energy store of the ball decreases as it falls?
[1 mark] .2Calculate the energy transferred from this store as the ball falls 1.5 m.
[2 marks] .3Assume all of this energy is transferred to the ball's kinetic store.
Calculate the speed of the ball just before it hits the ground.
[2 marks] 4 marksFoundation
An electric kettle has an input power of 2000 W. The useful power output, heating the water, is 1800 W.
.1Calculate the efficiency of the kettle.
[2 marks] .2Calculate the power wasted by the kettle.
[1 mark] .3Give one way energy is wasted by the kettle.
[1 mark] 4 marksFoundation
A student has two bar magnets, some small objects and a plotting compass.
.1The student holds the north pole of one magnet near the north pole of the other. What happens?
[1 mark] .2Which object would be attracted to a magnet?
[1 mark] .3Describe how the student can use the plotting compass to find the direction of the magnetic field at a point near a magnet.
[2 marks] 