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In figure two positive charges q(2) and ...

In figure two positive charges `q_(2)` and `q_(3)` fixed along the y-axis ,exert a net electric force in the `+x` direction on a charge `q_(1)` fixed along the x-axis if a positive charge `Q` is added at `(x,0)` the force on `q_(1)`

A

shell increase along the positive X-axis

B

shall decrease along the positive X-axis

C

shall point along the negative X-axis

D

shall increase but the direction changes because of the intersection of Q with `q_2` and `q_3`

Text Solution

Verified by Experts

The correct Answer is:
A
Charges `q_2` and `q_3` are given to be positive and the direction of force on `q_1` is along positive X-axis. Hence, charge `q_1` must be negative in polarity. The positive charge Q placed additionally will also attract `q_1` along positive X-axis. Net force on `q_1` will increase in the positive X-direction.
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Knowledge Check

  • In the figure two positive charges q_2 and q_3 fixed along the Y-axis, exert a net electric force in the + x direction on a charge q_1 fixed along the X-axis. If a positive charge Q is added, at {x, 0), the force on q_1

    A
    shall increase along the positive X-axis
    B
    shall decrease along the positive X-axis
    C
    shall point along the negative X-axis
    D
    shall increase but the direction changes because of the intersection of Q with `q_2`and `q_3`

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    A
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    B
    Both are positive
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    A
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    C
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    D
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