Question

Two point charges q and 4q are at a distance l from each other.

Which charge and at what distance must be introduce into the system from the first charge so the entire system is in equilibrium? Will it be a stable or unstable equilibrium?

I am having problem understanding this problem so a clear explanation would be a great help!

Thank you so much!

Answer #1

1.4 [2pt] Consider two positive point charges Q at a distance 2
R from each other. Sketch electric field lines including their
direction.
1.4 ANSWER
1.5 [ 3pt] In problem 1.4, calculate electric fields (i) at a
distance R to the left of the left charge, (ii) at a distance R to
the right of the right charge, and (iii) at the mid-point between
the two charges. Assume Q = 1C and R = 1m.
1.5 ANSWER(s)
1.6 [3pt] Same...

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away from the 1.0 µC charge, ---Select--- between the charges on
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Reference: In this instance the Conducting plate Separates -q
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two identical point particles with charge q are attached to the
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Two stationary point charges of 4.00nC and 2.00nC are separated
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Please help!!! Thank you in advance!

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s. The dipole is fixed in place while a point charge Q is
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a. two equal charges Q are separated by some distance. charge
number 3 in sitting exactly between the two so that the net force
on each is 0, this means that the third charge must be which:
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b: two resistors are connected in parallel with battery,
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the current is same in each resistor
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Vtotal =
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Problem 1
Two charges are placed in an electric field a distance r from
each other. Charge q1 is positive while charge q2 is negative.
Select all possible changes that will double the electric force
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(a) change the sign of q2
(b) half the magnitude of q1 and half of r
(c) double the magnitude of q2 and take half of r
(d) take half of r
(e) double the magnitude of one of the charges...

Two one-coulomb point charges are at a distance of 1.55 m from
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