Physics
The rating of a fuse connected in the lighting circuit is:
- 15 A
- 5 A
- 10 A
- zero
Household Circuits
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Answer
5 A
Reason — In electric wiring for light and fan circuits a thin fuse wire of low current rating i.e., 5 A is used because the line wire has a current carrying capacity of 5 A.
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Related Questions
An alloy of lead and tin is used as the material of the fuse wire because its melting point is …………… and specific resistance is …………… ,
- high, high
- low, high
- low, low
- high, low
The full form of MCB is :
- miniature current breaker
- miniature current board
- miniature circuit breaker
- miniature circuit board
The use of MCB is more convenient than a fuse because :
- it avoids the inconvenience of connecting a new fuse wire
- it is much safer for quick response
- it takes a very long time for tripping
- both (1) and (2)
Assertion (A): A fuse wire must have a high resistance and low melting point.
Reason (R): A fuse is only used for a small current flow.
- Both A and R are true and R is the correct explanation of A.
- Both A and R are true and R is not the correct explanation of A.
- assertion is false but reason is true.
- assertion is true but reason is false.