# Two free charges q and 4q are placed at a distance d apart A third charge Q is placed between them at a distance x from charge q such that the system is in equilibrium. Then magnitude of third charge and postion,

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Updated on:21/07/2023

### Similar Practice Problems

• Question 1 - Select One

## Two point charges +4q and +q are placed at a distance L apart. A third charge Q is so placed that all the three charges are in equilibrium. Then location. And magnitude of the third charge will be

AAt a distance L3 from +4q charge, 4q9
BAt a distance L3 from +4q charge 4q9
CAt a distance 2L3 from +4q charge 4q9
DAt a distance 2L3 from +q charge 4q9
• Question 1 - Select One

## Two point charges +q and −q are placed a distance x apart. A third charge is so placed that al the three charges are in equilibrium. Then

Auknknown charge is 4q/9
Bunknown charge is 9q/4
Cit should be at (x/3)from smaller chargge between them
Dnone of these
• Question 1 - Select One

## A charge q is placed at the centre of the line joining two equal charges Q. The system of the three charges will be in equilibrium if q is equal to:

A(a) Q2
B(b) Q2
C(c) Q4
D(d) Q4
• Question 1 - Select One or More

## Two force point charges +q and +4q are a distance l apart. A third charge q1 is so placed that the entire system is in equilibrium. Find the location, magnitude and sign of the third charge.

Aq1=49q
Bq1=49q
Cq1 is to be placed at a distance l/3 from q.
Dq1 is to be placed at a distance 2l3 from 4q.
• Question 1 - Select One

## Two point charges 2q and 8q are placed at a distance r apart. Where should a third charge −q be placed between them so that the electrical potential energy of the system is a minimum

Aat a distance of r/3 from 2q
Bat a distance of 2r/3 from 2q
Cat a distance of r/16 from 2q
DNone of the above

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