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WorksheetsPRE-UPS 1 SP025
Total questions: 20
Worksheet time: 10mins
Name
Class
Date
1.
A, B and C are three points in a uniform electric field. The electric potential is
a)
Maximum at A
b)
Maximum at B
c)
Maximum at C
d)
Same at all the three points A, B and C
2.
A region around a stationary electric charge is
a)
An electric field
b)
A magnetic field
c)
A magnetic line
d)
None of the above
3.
The energy supplied by a unit charge as it moves from one point to the other in the direction of the field is called
a)
electric field
b)
electric field strength
c)
potential difference
d)
electric field intensity
4.
Which of the following represents the electric field map due to a combination of two positive charges?
a)
'
b)
;
c)
,
d)
"
5.
A non-uniform electric field which is represented by equipotential lines. What is the direction of the electric field at point A?
a)
'
b)
,
c)
;
d)
"
6.
An electric field due to a positive charge is represented by the diagram. Between which of the following two points does the electric field do zero work on a moving charge?
a)
A and B
b)
B and C
c)
C and D
d)
D and E
7.
An electric field is created by two parallel plates. At which of the following points is the electric field the strongest?
a)
A
b)
B
c)
C
d)
None of the above
8.
Which among the following equations is correct?
a)
Q=CV
b)
Q=C/V
c)
C=QV
d)
C=V/Q
9.
Capacitors charge and discharge in __________ manner.
a)
square
b)
linear
c)
exponential
d)
None of the above
10.
The capacitance of a parallel-plate capacitor depends on which of the following?
a)
I and III
b)
I and II
c)
II and III
d)
I, II and III
11.
A parallel plate capacitor C has a plate separation of distance d and an area A. What is the new capacitance if the area of the plates is doubled and the plate separation is halved?
a)
C/2
b)
C
c)
2C
d)
4C
12.
A parallel-plate capacitor has a capacitance C. What is the new capacitance when a dielectric with κ = 4 is inserted between its plates?
a)
4C
b)
C/4
c)
2C
d)
C/2
13.
A parallel plate capacitor has a charge of Q. The voltage between the plates is V. If C is halved and Q is not changed, how is V affected?
a)
V is halved
b)
V is doubled
c)
V is unchanged
d)
None of the above
14.
Kirchhoff's first law is based on law of conservation of
a)
charge
b)
energy
c)
momentum
d)
mass
15.
To pass the current through ammeter it should be connected in
a)
parallel in circuit
b)
series in circuit
c)
direct circuit
d)
alternating circuit
16.
The resistance of a pure metal ............... as the temperature increases.
a)
increases
b)
decreases
c)
remain constant
d)
None of the above
17.
Which of the following quantities remain the same in all parts of a series circuit?
a)
Voltage
b)
Power
c)
Current
d)
Resistance
18.
The rate of flow of an electric charge is known as
a)
electric potential
b)
electric conductance
c)
electric current
d)
electric field
19.
The resistance of a conductor is directly proportional to
a)
its area of cross-section
b)
density
c)
melting point
d)
length
20.
According to Kirchhoff’s voltage law, the algebraic sum of all IR drops and emfs in any closed loop of a network is always
a)
Positive
b)
Negative
c)
Zero
d)
None of the above
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