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Chapter 14 - Electromagnetism - 4
1.
Magnetic field inside a long solenoid:
a) Non-uniform
b) Uniform
c) Circular
d) Negligible
2.
Which of the following is most suitable for the core of an electromagnet:
a) Soft iron
b) Air
c) Steel
d) An alloy
3.
In particle velocity selector method, the selected speed is given by:
a) V=F/E
b) V=E/B
c) V=B/E
d) V=E/F
4.
Which one of these can be used to determine the presence of a magnetic field in a given region of space.:
a) An ammeter
b) Galvanometer
c) A current loop
d) AVO meter
5.
One weber m
-2
is equal to:
a) 10
2
Gauss
b) 1 Gauss
c) 10 Gauss
d) 10
4
Gauss
6.
Which one is suitable choice for circular trajectory of a charged particle:
a) Conservative field
b) Magnetic field
c) Gravitational field
d) Electric field
7.
When a charged particle enters a region when electric and magnetic field are simultaneously applied, the resultant force on a charged is known as:
a) Lorentz force
b) Electrostatic force
c) Reaction force
d) Magnetic force
8.
Magnetic flux density at a point due to current carrying conductor be determined by:
a) Gauss’s Law
b) Faraday’s Law
c) Flemming’s Law
d) Ampere’s Law
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