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Transcript
ASSIGNMENT ON PHYSICS
Class:10
Date: 17-4-2017
Magnetic effects of electric current
1. The properties of magnetic field lines
2.Why don’t two magnetic lines of force intersect each other
3.Draw the magnetic field lines around a bar magnet
4.Name two safety measures commonly used in electric circuits and
appliances
5.What precaution should be taken to avoid the over loading of
domestic electric circuit
6.What is the unit of magnetic field
7.When does an electric short circuit occur
8.What is the function of an earth wire? why is it necessary to earth
metallic appliances
9.What is an electromagnet
10.The magnetic field inside along straight solenoid is ___________
11.Two circular coils A and B are placed closed to each other. If the
current in the coil A is changed ,will some current be induced in the coil
B? Give reason.