Question text
31 The diagram shows an electric circuit. R S T switch When the switch is open, which lamp(s) are not lit? A R only B S only C R, S and T D S and T only
31 The diagram shows an electric circuit.
R
S T
switch
When the switch is open, which lamp(s) are not lit?
A R only
B S only
C R, S and T
D S and T only
Select your answer: