Question

1. A fuse is an application of the magnetic effect
of current.
2. In an electromagnet, the wire to make the coil
should be insulated.
3. In the symbol of electric cell, three parallel and
vertical lines are drawn.
4. Electromagnets are permanent magnets.
5. Nichrome is a material which can withstand
high temperature.​true/false

Answer 1

Answer:

heating effect

The electric fuse works on the principle of the heating effect of electric current. It consists of a piece of wire made of a metal or an alloy of low melting point. As the current increases beyond a limit, the wire in the electric fuse melts and breaks off. The fuse is then said to have blown off.

t is very important to insulate the wire otherwise it will short out the turns and the magnet will be ineffective. You get the most current from a battery when its fully charged. Also, its a good idea not to withdraw the current at too high a rate.

An electronic circuit is composed of individual electronic components, such as resistors, transistors, capacitors, inductors and diodes, connected by conductive wires or traces through which electric current can flow

Answer 2

$1.false$

$2. \: true$

$3.false$

$4 . \: false$

$5.true$