Question

1. In above experimentee r. Would be use to find direction of magni nostre
a. bar magnet
b. borse shoe magnet
c. disc magnet
d. magnetic needle
2. When electric current is passed through the solenoid, it shows magnetic Ines A TOTC mika
to a ...
a, bar magnet,
b. horse shoe magnet,
c. disk magnet d. spherical magnet,
3. In ............ appliance Fleming Left Hand rule is not used,
a, electric fan
b. mixer
c. computer d. dedne generator
4. Heating effect of electric current does not observed in ..
a, electric oven, b, clectric iron. c. decric motor d. fuse.
..... is used to measure electric resistance in a circuit
a, Voltmeter
b. Galvanometer c. Ammeter
d. Ohm meter
5
: Exercise:
1. What is the reason behind covering wires carring electricity with rubber in some places?
2. What procedure will you follow to study magnetic field, if you are provided with parafin oil,
iron nail, bar magnet, battery, coil conductor wire?
2. Which magnet will you choose among permanent magnet and electromagnet for Industrial
purpose? Justify your answer.​

Answer 1

Answer:

1 d) magnetic needle

2 a) bar magnet

3 a) electric fan

4 c) decric motor

d) ohm- meter

5 To prevent from an electric shock as rubber do not conduct electricity

For industrial purpose electromagnet is a good magnet to lift heavy objects or seperators that are responsible for sorting ferromagnetic metals from scrap metals