Physics
Complete the following sentences —
(a) A fuse is a short piece of wire of high ………. and of material low ………..
(b) A fuse wire is made of an alloy of ………. and ……….. If the current in a circuit exceeds the current rating of the fuse wire it ………..
(c) A fuse is connected in ………. with the ………. wire.
(d) Higher the current rating, ………. is the fuse wire.
(e) Live wire is also called ………. wire.
Household Circuits
65 Likes
Answer
(a) A fuse is a short piece of wire of high resistance and of material low melting point.
(b) A fuse wire is made of an alloy of lead and tin. If the current in a circuit exceeds the current rating of the fuse wire it melts.
(c) A fuse is connected in series with the live wire.
(d) Higher the current rating, thicker is the fuse wire.
(e) Live wire is also called phase wire.
Answered By
41 Likes
Related Questions
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.
Assertion (A): Same current flows through the live wires and the filament of a bulb, but the heat produced in the filament is much higher.
Reason (R): The filament of a bulb is made of low resistance and high melting point.
- 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.
Why is the fuse wire fitted in a porcelain casing?
Two fuse wires are rated 5 A and 20 A. Which of the two is (i) thicker, (ii) longer?