(a)[1]
In Fig. 10.1, circle the symbol that stands for the heater.
(b(i))[1]
State what a variable resistor does.
(b(ii))[1]
Suggest how a variable resistor can change the heater's operation.
(c)[3]
Calculate the motor's resistance.
(d)[2]
State the name of component X and explain how it helps to keep the user safe.