IGCSE A Level Physics MCQs - Chapter 8
Electric Current, Potential Difference and Resistance Trivia Questions & Answers PDF Download - 4
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Electric Current, Potential Difference and Resistance Test Questions and Answers PDF Download: MCQ 4
To protect wiring from excessive passing of current is
- voltmeter
- fuse
- galvanometer
- resistance
Current in a 60 W light bulb when it is connected to a 230 V power supply is
- 0.26 A
- 1.5 A
- 2.6 A
- 3.9 A
Grid cables are 15 km long with a resistance of 0.20 Ω km-1, powers wasted as heat in these cables are
- 50 kW
- 60 kW
- 20 kW
- 30 kW
Actual velocity of electrons between collisions is
- 1030 ms-1
- 1020 ms-1
- 10² ms-1
- 105 ms-1
By increasing the current, the drift velocity
- decreases
- increases
- remains constant
- becomes zero
IGCSE A Level Physics Mock Tests
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