NEET TEST SERIES 2017, TEST - 3 Electrostatic & Current Electricity
NEET TEST SERIES 2017, TEST - 3 Electrostatic & Current Electricity
NEET TEST SERIES 2017, TEST - 3 Electrostatic & Current Electricity
1 1
q q q q I 2 p 2
(3) (4)
pE IE
2q 2q 2q q
III IV 6. If the electric flux entering and leaving an closed surface
respectively is 1 and 2 the electric charge inside the
(1) IV (2) III surface will be
(3) I (4) II (1) (1 + 2)0 (2) (2 1)0
2 q Q 2 2Q
(1) (2)
(1) (2) 4 0 R 4 0 R
0 a 0 a
2Q 2q 2Q q
(3) (4)
40 R 40 R 40 R 40 R
(3) (4)
2 0 a 0 a
8. An electron travels a distance of 0.10 m in an electric field
3. As shown in the fig. charges + q and q are placed at the of intensity 3200 V/m, enters perpendicular to the field
vertices B and C of an isosceles triangle. The potential at with a velocity 4 107m/s, what is its deviation in its path
the vertex A is :
(1) 1.76 mm. (2) 17.6 mm.
A (3) 176 mm. (4) 0.176 mm.
E B C
E D
3qQ 3qQ
(1) (2)
r r 4 0 a 8 0 a
(1) O R (2) O R
qQ
(3) (4) Zero
4 0 a
E E
16. Which one of the following pattern of electric line of force
can't possible
(3) O R r (4) O R r
(1) 15 N/C (2) 15 1010 N/C (3) 8.6 103 C (4) 9 106 C
(3) 3 N/C (4) 3 1010 N/C
(3) 10 2 (4) 2 29 C
21. A particle of mass m and charge q is released from rest in (1) VA > VC, VB = VD (2) VA < VC, VB = VD
an electric field E. Then the K. E. after time t will be:
(3) VA = VC, VB < VD (4) VA = VC, VB > VD
2E 2 t 2 P. r
(1) (2) 2
mq r 27. The electric potential V is given as a function of distance x
(metre) by V = (5x210x9) volt. Value of electric field at x
P r P r = 1 m is
(3) (4)
r3 r2 (1) 20 V/m (2) 6 V/m
(3) 11V/m (4) zero
22. Electric field at a distance x from origin is given as E =
100 28. Two identical thin rings, each of radius R meters, are
, then potential difference between points situated
x2 coaxially placed at a distance R meters apart. If Q1
at x = 10 m and x = 20 m. coulomb and Q2 coulomb are respectively the charges
(1) 5 V (2) 10 V uniformly spread on the two rings, the work done in
(3) 15 V (4) 4V moving a charge q from the centre of one ring to that of
other is
23. As shown in figure, on bringing a charge Q from point A
q(Q1 Q2 )( 2 1)
to B and from B to C, the work done are 2 joule and 3 (1) zero (2)
joule respectively. The work done in bringing the charge ( 2.4 0 R)
from C to A will be
q 2(Q1 Q2 ) q(Q1 Q 2 )( 2 1)
(3) (4)
C (4 0 R) ( 2.4 0 R)
(4)
(3) 106 volt/m (4) 108 volt/m 43. Two cells X and Y are connected to a resistance of
10as shown in the figure. The terminal voltage of cell Y
39. Two wires of resistance R1 and R2 at 0 C have is
temperature coefficient of resistance 1 and 2,
respectively. These are joined in series. The effective 6V,2 4V,8
temperature coefficient of resistance is
1 2
(1) (2) 12 X Y
2 10
1 R1 2 R2 R1R2 12
(3) (4)
R1 R2 R12 R22 (1) zero (2) 2V
40. Five equal resistances each of resistance R are connected (3) 4V (4) 10V
as shown in the Figure. A battery of V volts is connected
between A and B. The current flowing in AFCEB will be 44. Masses of three wires of same metal are in the ratio 1:2:3
C and their lengths in the ratio 3:2:1. Electrical resistance of
these wires will be in the ratio of
(1) 1:1:1 (2) 1:2:3
2A 2A
3 2
Y
(1) 1 (2) 1
(3) 2 (4) 2
3m
E 5,5m
E
G
R
10 10
10
B 10 10 10 A
(1) 8 (2) 10
(3) 16 (4) 24