Question

In a household electric circuit:

• A. all electric appliances drawing power are joined in parallel
• B. a switch may be either in series or in parallel with the appliance which it controls
• C. if a switch is in parallel with an appliance, it will draw power when the switch in the off position (open)
• D. if a switch is in parallel with an appliance, the fuse will blow (burn out) when the switch is put on (closed)

Answer 1

Answer: (A), (C), (D)

The correct options are
A all electric appliances drawing power are joined in parallel
C if a switch is in parallel with an appliance, it will draw power when the switch in the off position (open)
D if a switch is in parallel with an appliance, the fuse will blow (burn out) when the switch is put on (closed)

All appliances in houses are connected parallel so that even if one get damaged , others will work properly and all appliances are independent .
If switch is connected in parallel, there will be short circuit when switch is on and hence fuse will be blown and when switch is off, the appliance will draw power and there won't be any short circuit.