Question

* Give scientific reason (any 2) (2 marks each)

1) There is a fuse in electric current.
2)Satellite move with high velocity after second step.
3) Generally ionic compounds have high melting point.​

Answer 1

Answer:

a fuse is nothing more than a short length of wire designed to melt and separate in the event of current

Answer 2

Answer:

1. In electronics and electrical engineering, a fuse is an electrical safety device that operates to provide overcurrent protection of an electrical circuit. Its essential component is a metal wire or strip that melts when too much current flows through it, thereby interrupting the current.

3. Ionic compounds have high melting points because there is a strong electrostatic force of attraction between the oppositely charged ions and hence a large amount of energy is required to break the strong bonding force between ions.