An electric fuse works on the following principle:
2022
An electric fuse works on the following principle:
Answer: D. Heating effect of the current — An electric fuse works on the heating effect of electric current. When excessive current flows through the circuit: Heat produced in the fuse wire increases.…
- A.
Chemical effect of current
- B.
Magnetic effect of current
- C.
Lighting effect of current
- D.
Heating effect of the current
Attempted by 358 students.
Show answer & explanation
Correct answer: D
An electric fuse works on the heating effect of electric current.
When excessive current flows through the circuit:
Heat produced in the fuse wire increases.
The fuse wire melts due to its low melting point.
The circuit breaks automatically.
Electrical appliances are protected from damage.
This principle is based on Joule's Law of Heating:
where:
H = Heat produced
I = Current
R = Resistance
t = Time
Therefore, an electric fuse works on the heating effect of current.