An electric circuit is shown here. When the switch S is opened, which of the following lamp(s) will switch off?
A1 only
B3 only
C2 and 3 only
D1, 2 and 3
An electric circuit is shown here. When the switch S is opened, which of the following lamp(s) will switch off?
A1 only
B3 only
C2 and 3 only
D1, 2 and 3