Electricity: Circuits and their Components — Important Questions
CBSE · Class 7 · Science
44 important questions from Electricity: Circuits and their Components for CBSE Class 7 Science, with answers. Part of the CBSE Class 7 Science syllabus.
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Important Questions from Electricity: Circuits and their Components
Which materials are good conductors of electricity?
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Copper, Silver, Gold
Metals like copper, silver, and gold are excellent conductors of electricity. Plastic and rubber are insulators that do not allow electric current to flow easily.
In which direction does electric current flow in a circuit?
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From positive to negative terminal
By convention, electric current is considered to flow from the positive terminal to the negative terminal of an electric cell in a closed circuit.
Which of the following are insulators?
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Glass, Wood, Wax
Glass, wood, and wax are insulators that do not allow electric current to flow through them easily. Iron and aluminum are metals and are conductors.
What happens when a switch is in the OFF position?
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The circuit is open
When a switch is in the OFF position, there is a gap in the circuit path, making the circuit open. No current can flow, so the lamp does not glow.
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Sources & Official References
- NCERT Official — ncert.nic.in
- CBSE Academic — cbseacademic.nic.in
- CBSE Official — cbse.gov.in
- National Education Policy 2020 — education.gov.in
Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.
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