Two point charges q1 ( ) and q2(−25
are placed on the x-axis at x = 1 m and x = 4 m respectively. The electric field (in V/m) at a point y = 3 m on y-axis is,
a. |
(−63 |
b. |
(81 |
c. |
(63 |
d. |
(−81 |
Two point charges q1 ( ) and q2(−25
are placed on the x-axis at x = 1 m and x = 4 m respectively. The electric field (in V/m) at a point y = 3 m on y-axis is,
a. |
(−63 |
b. |
(81 |
c. |
(63 |
d. |
(−81 |
Let &
are the vaues of electric field due to q1 and q2 Respectively magnitude of
E2 =
E2=
E2=9×103 V/m
∴ = 9×103 (
− sinθ2
tanθ2 = 3/4
∴ = 9×103
Magnitude of =
=(9
=9 102
∴
=9
102 [cos
1(
)+sin
1
]
∴ tan =3
E1=9 102
E1=9 102
=
102
∴ =
1+
2 =(63
−27
)
102 V/m
∴correct answer is (c)
Book, Novel, Pen
(A) a (B) b (C) c (D) d
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