(a(i))[1]
The current in the metal wires of the circuit is a stream of particles. State what these particles are called.
(a(ii))[1]
State what component X is called.
(a(iii))[3]
Calculate the resistance value of the light-dependent resistor (LDR).
(b)[2]
State and explain how increasing the brightness of the light falling on the LDR affects the current in the circuit.