(iv) Devices where magnets is used.
(v) Safety measures to be practiced while handling e
Short Answer Type I Questions
(a) List components required to set up an electric circuit.
b) Describe an electromagnet.
c) What is a solenoid?
d) Which material is used to make an electromagnet?
e) Which material is used in a filament of a bulb?
hort Answer Type Il Questions
Answers
Answer:
b) Describe an electromagnet.
Ans:- An electromagnet is a magnet that runs on electricity. Unlike a permanent magnet, the strength of an electromagnet can easily be changed by changing the amount of electric current that flows through it. The poles of an electromagnet can even be reversed by reversing the flow of electricity.
c) What is a solenoid?
Ans:- a cylindrical coil of wire acting as a magnet when carrying electric current.
d) Which material is used to make an electromagnet?
Ans:- electromagnet: A magnet made of an insulated wire coiled around an iron core (or any magnetic material such as iron, steel, nickel, cobalt) with electric current flowing through it to produce magnetism.
e) Which material is used in a filament of a bulb?
Ans:- tungsten
Mention two reasons on why tungsten is used for making filament of electric bulb. Tungsten is used for making filament of an electric bulb due to the following reasons: Being an alloy it has a very high melting point.