These mcqs are taken from all boards including multan,sargodha,punjab,lahore ,rawalpindi, peshawar, federal board)etc only for 2nd year chapter number 1st;
Free electrons
are:
·
Tightly bound
·
Fixed
·
Loosely bound
·
Strongly fixed.
S I unit of
charge is(Gujranwala 1993,Punjab board 1994,faislabad 2003, A.K 1995)
·
Ampere
·
Volt
·
Coulomb
·
Calorie
Charge on
electron was determined by(Rawalpindi 1993,multan 2001,Lahore 2003)
·
Ampere
·
Maxwell
·
Millikan
·
Thompson
An insulating
rod is charged positivel by rubbing. This due to:
·
Deficiency of proton
·
Excess of protons
·
Deficiency of electrons
C.A coulomb measured
the force between two charges by: (Lahore in 2003)
·
Physical balance
·
Common balance
·
Cavedish balance
·
Torsion balance
The quantitative
measurement of force between two electric charge was made by:
·
Maxewell
·
Newton
·
Charles coulomb
·
Faraday
If the
distance btw two charges is doubled,the electric force between tehm will
become: (Faisalabad 1992,Rawalpindi 2002)
·
Four times
·
Twice half
·
One fourth
Value of
dielectric constant for air or vaccum is: (Rawalpindi 2006)
·
One
·
Less
then one
·
Greater
than one
·
Slightly
less one.
The concept of electric field theory was introduced by: (Faisalabad 2000)
·
Dalton
·
Kelper
·
Newton
·
Michael faraday
Force experienced by a unit positive charge place at a
point in the electric field is known as: (Faisalabad 2000)
·
Electric field intensity
·
Magnetic
field intensity
·
Electric
potential
·
Capacity
The force per unit charge is known as: (Punjab board 2004)
·
Electric
flux
·
Electric intensity
·
Electric
potential
·
Electric
volt
S I unit of electric field intensity is: (Gujranwala 1993,
D.G khan 2007):
·
Coulomb
·
Volt
·
Newton/coulomb
·
Ampere
The unit of electric field strength is: (multan 2002. Gujranwala
2000)
·
Newton
·
Coulomb
·
Joule/coulomb
·
Newton/coulomb
Electric field intensity is a vector quantity and its
direction is:
·
Perpendicular
to the direction of field
·
Opposite
to the direction of force
·
Along the direction of force
·
At
a certain angel
An electric field can deflect:
·
Neutrons
·
x-rays
·
alpha rays
·
gamma
rays
An electric field cannot deflect:
·
Neutrons
·
Beta
partical
·
x-rays
·
gamma
rays
the electric field will be uniform: (Lahore 2010)
·
near
positive point charge
·
near
a negative point charge
·
between two parallel oppositely
charge metal plates
·
none
of the above.
An electric charge at rest produces: (Lahore 2007)
·
Only
magnetic field
·
Only an electric field
·
Conservative
field
·
None
of the above
The path along which a unit positive charge moves in an
electric field is called: (Peshawar 2008)
·
Magnetic
line of force
·
Path
of the charge
·
Direction
of the charge
·
An electric line of force
Number of electric lines of force passing through a
certain area is known as:
·
Electric
field
·
Electric flux
·
Electric
potential
·
None
of the above
The electric flux through any surface depends upon: (Sargodha
1992,Sargodha 2012)
·
The
area of the surface
·
Direction
of the surface relative to the field
·
The
intensity of the electric field
·
All of the above
The electric flux is a: (multan 2002)
·
Vector
quantity
·
Scalar quantity
·
Vector
as well as scalar quantity
If a closed surface contains two equal and opposite
charges the net electric flux from the surface will be: (Sargodha 2000)
·
Positive
·
Negative
·
Positive
as well as negative
·
Zero
Another name for electric potential energy per unit
charge is given by: (Bahawalpur 2001)
·
Electric
field
·
Electric
intensity
·
Electric
flux
·
Electric potential
The earth potential is considered as:
·
Positive
·
Negative
·
Infinite
·
Zero
Tick the correct statement: (faislabad 2010)
·
Two
equipotential surfaces can intersect
each other
·
Two equipotential surfaces cannot intersect each other
·
They
intersect some time
·
None
of the above
The capacitance C of a capacitor is given by the
relation: (lahore 2000)
·
C=QV/2
·
C=QV
·
C=Q/V
·
C=V/Q
For a capacitor the charge per unit volt is called: n(Lahore
2002)
·
Charge
density
·
Dielectric
constant
·
Permittivity
·
Capacitance
Farad is the unit of : (Lahore 1999,Punjab boards 2002,Rawalpindi
2007)
·
Charge
·
Current
·
Potential
·
Capacitance
A capacitor is a perfect insulator for: (Lahore 2004)
·
Direct
current
·
Alternating current
·
Both
for the direct and alternating current
·
Electric
charge
The value of capacitance depends upon the : (Rawalpindi 2002)
·
Thickness
of capacitor plates
·
Charge
on plates
·
Geometry of the capacitor
·
None
of the above.
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