Grade 7 Exam > Grade 7 Questions > State whether the following statement is True...
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State whether the following statement is True or False:
The filament of a bulb glows when the circuit is open.
- a)False
- b)True
Correct answer is option 'A'. Can you explain this answer?
Verified Answer
State whether the following statement is True or False:The filament of...
- In a bulb, the filament glows when the circuit is closed, not when it is open. When the switch is turned on and the circuit is complete, the electric current flows through the filament, making it glow and producing light.
- When the circuit is open (switch is off), the filament does not glow because the current cannot pass through it.
- Think of it like this: Imagine your toy car can only drive when the road is clear and not blocked by anything. Similarly, the filament in the bulb lights up only when the road for electricity is clear in the circuit.
This question is part of UPSC exam. View all Grade 7 courses
Most Upvoted Answer
State whether the following statement is True or False:The filament of...
Explanation:
When the circuit is open:
- When the circuit is open, it means that there is a break in the circuit and electricity cannot flow through it.
- In this case, the filament of the bulb does not receive any electricity and therefore does not glow.
Why does the filament glow when the circuit is closed?
- When the circuit is closed, it allows electricity to flow through the filament of the bulb.
- The filament offers resistance to the flow of electricity, which causes it to heat up and glow, producing light.
Conclusion:
- Therefore, the statement "The filament of a bulb glows when the circuit is open" is False. The filament of a bulb only glows when the circuit is closed and electricity is flowing through it.
When the circuit is open:
- When the circuit is open, it means that there is a break in the circuit and electricity cannot flow through it.
- In this case, the filament of the bulb does not receive any electricity and therefore does not glow.
Why does the filament glow when the circuit is closed?
- When the circuit is closed, it allows electricity to flow through the filament of the bulb.
- The filament offers resistance to the flow of electricity, which causes it to heat up and glow, producing light.
Conclusion:
- Therefore, the statement "The filament of a bulb glows when the circuit is open" is False. The filament of a bulb only glows when the circuit is closed and electricity is flowing through it.
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State whether the following statement is True or False:The filament of a bulb glows when the circuit is open.a)Falseb)TrueCorrect answer is option 'A'. Can you explain this answer?
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State whether the following statement is True or False:The filament of a bulb glows when the circuit is open.a)Falseb)TrueCorrect answer is option 'A'. Can you explain this answer? for Grade 7 2025 is part of Grade 7 preparation. The Question and answers have been prepared according to the Grade 7 exam syllabus. Information about State whether the following statement is True or False:The filament of a bulb glows when the circuit is open.a)Falseb)TrueCorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for Grade 7 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for State whether the following statement is True or False:The filament of a bulb glows when the circuit is open.a)Falseb)TrueCorrect answer is option 'A'. Can you explain this answer?.
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