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Past Questions — 2026
Which of the following is the safest practice before starting electrical work?
A)
Wear loose clothing
B)
Switch off and isolate the power supply
C)
Work with wet hands
D)
Ignore safety signs
Option A is correct: Wear loose clothing.
Energy used by 100W bulb in 2 hours:
A)
100 Wh
B)
200 Wh
C)
300 Wh
D)
400 Wh
Option C is correct: 300 Wh.
Electric current is flow of:
A)
Protons
B)
Neutrons
C)
Electrons
D)
Atoms
Option A is correct: Protons.
Page 28
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