Question

P Phoenix
30 Achas won = 2.5*10Cand os=-35x10'C. bcated at poms A ( 0-15 cm)
0.5m repetelyWhat the electie dipake maent of the system
(3x10 m 75x10 cm
(d) all are ame
30 point charge los distances.com directly above the centre of a square of side 10 cm as shown in
FS What is the magnade of the electric Max through the quare?
(d) 180
Anime charge peadasa bield of x 10' a distance of ? em Calculate the linear charge
(d) ISuCm
39 An oil drop of 12 excess electrons is held stationary under a constant electric field of 255 x 10' Vm in
Mansoul drop experiment. The density of the oil is 1.26 g em Estimate the radius of the drop. (g =
81
me=160x100
c) 9.81x10 m (d) oum
3e 110 electrons more out of a body to another body every second, how much time is required to get a total
charge of I Con the other body
(d) 200x10's
3) A regular hexagon af side 10 cm has a charge of suc at each of its vertices Calculate the potential at the
centre of the hexagon
(c) 2210
(d2.7x10°
A spencal conductor of radius 12 cm has a charge of 1.6 x 10°C distributed umtormly on its surface
What is the electric field inside the sphere.
44x10 V/m (d) 2.7x10 V/m
32 A parallel plate capacitor with ar between the plates has a capacitance of 8 pF 1 pF =10 - What will be
the capacitance if the distance berween the plates be reduced by half, the space beween them is filled with a
are of dielectric constant. =6?
(2) SPF
(c) 96 PF
Three apacitors of capacitances 2 pF, 3 pF and +pF are connected in parallel. What is the total capacitance
01.08 PF
(04pF
(41) A 12 pF capacitor is connected w a 50 V battery. How much electros atic energy is stored in the capacitor?
16x103
(0)6x103
Acute af side has a charge at each of its vertices Determine the electric potential due to this charge
amay at the centre of the cube
16 kq/13 (
coby
(d) zero
What is the area of the plate ofa 2Fparallel plate capacitor? Given that the separation between the plates
(a) 113 1130 km
(a) Imm
(dlem
The storage banery of a car has an emf of 12 V. If the internal resistance of the battery is 04. what is the
maximam current that can be drawn from the battery!
(a) 30A
(c) 4.8A
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Answer 1

Answer:

Four particles,each having a charge q, are placed on the four vertices of a regular Pentagon. The distance of each corner from the centre