MyQuestionIcon

1

You visited us 1 times! Enjoying our articles? Unlock Full Access!

Charge

Two point cha...

Question

Two point charges $Q_{1}$ and $Q_{2}$ are positioned at points $1$ and $2$ respectively. The field intensity to the right of the charge $Q_{2}$ on the line that passes through the two charges varies according to a law that is represented schematically in the figure. The field intensity is assumed to be positive, if its direction coincides with the positive direction on the $x -$ axis. The distance between the charges is $l$ . Then,

A

Q_{1}, Q_{2} =

Positive

No worries! We‘ve got your back. Try BYJU‘S free classes today!

B

Q_{1}, Q_{2} =

Negative

No worries! We‘ve got your back. Try BYJU‘S free classes today!

C

Q_{1} =

Positive,

Q_{2} =

Negative

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

D

Q_{1} =

Negative,

Q_{2} =

Positive

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is C $Q_{1} =$ Positive, $Q_{2} =$ Negative
Between $x = l$ to $x = l + a$ , the field intensity is negative. This means $Q_{2}$ at point $2$ is negative.
But for $x > l + a$ , the field intensity is positive with maximum at $x = l + b$ . This means $Q_{1}$ is positive and due to which net electric field at $x > l + a$ becomes positive.
Therefore, option (c) is correct.

Suggest Corrections

thumbs-up

2

Similar questions

Q. Two point charges

Q_{1}

Q_{2}

of equal magnitude are placed at a certain distance from each other. Assuming the field strength to be positive in the positive direction of x-axis.
The signs of the charges

Q_{1}

Q_{2}

for given graphs are :

Q. Two point charges

A

B

are placed on X-axis. Considering electric field

E

is positive if directed in positive X-direction. Variation of electric field strength with distance

x

is shown figure for

x

lying between the charges. Then the nature of charges

A

B

are respectively.

Q. The variation of electric field between two charges

q_{1}

q_{2}

along the line joining the charges is plotted against the distance

r

q_{1}

(taking the direction from

q_{1}

q_{2}

as positive) as shown in the figure. Find the correct statement among the following is

Q. In figure two positive charges,

q_{2}

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

(x, 0)

q_{1}

:

Q. The electric field lines for a system of two charges

Q_{1}

Q_{2}

fixed at two different points on the

x-

axis are as shown in the figure. Then

\frac{Q_{1}}{Q_{2}}

View More

Join BYJU'S Learning Program

explore_more_icon

Explore more

Standard IX Physics

Join BYJU'S Learning Program

CrossIcon