Question

Bare two points separated by a distance 5 cm. Two charges 10 uC and 20 uC are placed at A and
B. The resultant electric intensity at a point P outside the charges at a distance 5 cm from 10 uC is
a) 54 x 106 N/C away from 10 uc
b) 56 x 106 N/C away from 10 uc
c) 9 x 106 N/C away from 10 uC .
d) zero
11. At the correct A, B, C of a square ABCD charges 10 mC, -20 mC and 10 mC are placed. The electric
intensity at the centre of the square to become zero, the charge to be placed at the corner D is
a) - 20mC
b) + 20 mc
c) 30 mc
d) - 30 mc
12. A charged oil drop is suspended in uniform field of 3 x 104 V/m so that it neither falls nor rises. The
charge on the drop will be (take the mass of the charge = 9.9 x 10-15 kg & g = 10 m/s2)
a) 3.3 x 10-18 C
b) 3.2 x 10-18 C
c) 1.6 X 10-18 C
d) 4.8 x 10-18 C
13. A particle of mass 'm' and charge q is placed at rest in a uniform electric field E and then released. The
K.E attained by the particle after moving a distance y is
a) qEy?
b) qE2y
c) Ey,
d) q2Ey
14. A proton and an a - particle start from rest in a uniform electric field, then the ration of times of flight to
travel same distance in the field is
a) V5: v2
b) v3:1
c) 2:1
d) 1:72
15. In a regular hexgon each corner is at a distance 'r' from the centre. Identical charges of magnitude 'Q' are
placed at 5 corners. The field at the centre is (K =
(K = 76.)
6KQ
a) KQ/r2
5KQ
c) 52
d) zero
r2 can u say me the name of book class 12 physics​

Answer 1

Answer:

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Explanation:

Here is your answer

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Bare two points separated by a distance 5 cm. Two charges 10 uC and 20 uC are placed at A and

Answer 2

Answer:

b. b

11. b

12. a

13. a

14. a

15. a

all are correct answer

hope answer is helpful