Domestic Circuits — Homi Bhabha Exam Physics MCQs with Solutions
Free Homi Bhabha Exam Physics Domestic Circuits MCQs with step-by-step solutions (4 questions). Part of Electricity & Magnetism. Practise online on Prepizo — no login needed.
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Questions with solutions
Q1 — Domestic Circuits · medium · theory
The voltage of the domestic electricity supply in India is about:
A. 220 V ✓ Correct
B. 1000 V
C. 12 V
D. 5 V
Solution: Indian household supply is about 220 V AC at 50 Hz.
Q2 — Domestic Circuits · hard · theory
The earth wire in a domestic circuit is provided mainly for:
A. safety, by carrying leakage current to the ground ✓ Correct
B. supplying current to appliances
C. increasing the voltage
D. reducing the bill
Solution: The earth wire safely diverts any leakage current to the ground, protecting the user from shock.
Q3 — Domestic Circuits · medium · theory
Electrical appliances in a house are connected in parallel so that:
A. each gets the full supply voltage and can be switched on/off independently ✓ Correct
B. only one can work at a time
C. they share the voltage
D. the current is the same in all
Solution: Parallel connection gives every appliance the full 220 V and independent operation.
Q4 — Domestic Circuits · hard · theory
For safety, the fuse (or MCB) in a household circuit is always connected in the:
A. neutral wire
B. appliance body
C. earth wire
D. live wire ✓ Correct
Solution: The fuse is placed in the live wire so that, when it blows, the appliance is disconnected from the live supply.