Miscellaneous MCQ's 1
Here are MCQ's for the preparation of entry test for NUST, UET, FAST, AIR, UHS
1.
the origin of field of force is
a.
spin motion of nucleus
b.
charge on electron
c.
mass of the object
d.
not yet known
2.
the force experienced by unit positive charge
place3d at a point in electric field is known as
a.
electric field intensity
b.
electric force
c.
magnetic field intensity
d.
capacitance
3.
the electric intensity at infinite distance from
the point charge is
a.
zero
b.
infinite
c.
1 volt /m
d.
Negative
4.
Two point charges of 16 micro C and 4 micro C
are separated by a distance of 3.0 m, the spot on the line joining the two
charges where electric field is zero is
a.
Between the two charges
b.
Left of 4 micro C charge
c.
Right of 4 micro C charge
d.
Right of 16 micro C charge
5.
If a close surface contains two equal and
opposite charges, the net electric flux from the surface will be
a.
Positive
b.
Negative
c.
Zero
d.
None of these
6.
Electric flux is a
a.
Vector quantity
b.
Scalar quantity
c.
Tensor
d.
Abstract
7.
A charge of 0.1 C accelerated through a
potential difference of 1000 V acquires K.E
a.
200 J
b.
1000 J
c.
400 J
d.
100 J
8.
The value of relative permittivity constant for
air is
a.
1.006
b.
1.0006
c.
1.000006
d.
1.6
9.
Sharks have special organs, called the ampullae
of lorenzini that detect potential difference of the order of
a.
Milli volt
b.
Micro volt
c.
Nano volt
d.
Pico volt
10.
The motion of windshield wipers of cars is the
application of
a.
Energy stored in capacitor
b.
Charging and discharging of capacitor
c.
Energy density
d.
None of these
11.
The capacitance of a capacitor increases by
a.
Decreasing , separation between plates
b.
Increasing area of plates
c.
Placing dielectric between plates
d.
All
12.
Who introduced the concept of electric o
electric field lines
a.
Michael Fa raday
b.
Maxwell
c.
Dalton
d.
Newton
13.
Which one is a photo conductor
a.
Selenium
b.
Sodium coated oxides
c.
Potassium coated oxide
d.
All
14.
Two points have a difference of potential of 10
volts. Work done in moving a charge of 5 coulomb from one point to another is
a.
2j
b.
50 J
c.
10 J
d.
12J
15.
A charged oil drop is stationary between two
metallic plates. If the drop caries a charge of q C and mass m kg, the PD between
plates is
a.
F/q
b.
qE
c.
mg/d
d.
mgd/q
16.
in ERG, the graph is plotted between time and
a.
current
b.
potential difference
c.
forc3e
d.
work
17.
pyrex glass is an example of
a.
conductor
b.
insulator
c.
semi conductor
d.
dielectric
18.
the vessel containing electrolyte and two
electrodes is known as
a.
acquifier
b.
voltameter
c.
primary cell
d.
voltmeter
19.
Rheostate consists of a wire of
a.
Manganin
b.
Silver
c.
Aluminium
d.
Molybedenum
20.
If the fourth band is silver then the tolerance
is
a.
10 %
b.
20 %
c.
5%
d.
50%
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