Question

Three charges, each of magnitude 6 nC, are at separate corners
of a square of edge length 4 cm. The two charges at opposite
corners are positive, and the other charge is negative. Find the x
and y components of the force exerted by these charges on a fourth
charge q = +3 nC at the remaining (upper right) corner. (Assume the
+x axis is directed to the right and the +y axis is directed
upward.)

1.) ____ N î

2.) ____ N j

Answer #1

Three equal positive point charges of magnitude Q = 9.00μ C are
located at three corners of a square of edge length d = 8.1 cm. A
negative charge -27.00μ C is placed on the fourth corner. At the
position of the negative charge, what is the magnitude of the
electric field due to the three positive charges?
What is the magnitude of the attractive force on the negative
charge?

Four point charges are located at the corners of a square. Each
charge has magnitude 3.50 nC and the square has sides of length
3.20 cm. Find the magnitude of the electric field (in N/C) at the
center of the square if all of the charges are positive and three
of the charges are positive and one is negative.
(a) all the charges are positive N/C
(b) three of the charges are positive and one is negative
N/C

Four point charges are located at the corners of a square. Each
charge has magnitude 1.70 nC and the square has sides of length
2.40 cm. Find the magnitude of the electric field (in N/C) at the
center of the square if all of the charges are positive and three
of the charges are positive and one is negative.
HINT
(a)
all the charges are positive
N/C
(b)
three of the charges are positive and one is negative

At each of the four corners of a square with side length a,
there is a charge +q. How many other charges are exerting electric
forces on the charge at the lower-right corner? The square is
placed so that its sides are either parallel or perpendicular to
the x-axis.

Eight point charges, each of magnitude q, are located on the
corners of a cube of edge s, as shown in Fig. 3 (i) Determine the
x, y, and z components of the resultant force exerted by the other
charges on the charge located at point A. (ii) What are the
magnitude and direction of this resultant force? (iii) Show that
the magnitude of the electric field at the center of any face of
the cube has a value of...

Identical +0.96 micro-Coulomb charges are fixed to adjacent
corners
of a square. What charge (magnitude and algebraic sign) should be
fixed to one of
the empty corners, so that the total electric potential at the
remaining empty corner is 0 V?

Identical +3.99 µC charges are fixed to adjacent corners of a
square. What charge (magnitude and algebraic sign) should be fixed
to one of the empty corners, so that the total electric potential
at the remaining empty corner is 0 V?
__________c
An equipotential surface that surrounds a point charge
q has a potential of 455 V and an area of 0.91
m2. Determine q.
________c

Three +3.0-μC point charges are at the three corners of a square
of side 0.50 m. The last corner is occupied by a -3.0-μC charge.
Find the magnitude of the electric field at the center of the
square. (k = 1/4πε0 = 8.99 × 109 N ∙ m2/C2)

A charge of 4.40 μC is placed at each corner of a square 0.100 m
on a side.
Determine the magnitude of the force on each
charge.
What is the direction of the force on the charge at
the upper right corner of the square? Assume that the positive
x-axis is directed to the right.

There are four charges, each with a magnitude of 1.91 μC. Two
are positive and two are negative. The charges are fixed to the
corners of a 0.266-m square, one to a corner, in such a way that
the net force on any charge is directed toward the center of the
square. Calculate the magnitude of the net electrostatic force
experienced by any charge.

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