1.)A 50 C point charge is at the origin. A: Find the electric field at the point

Question

1.)A 50 C point charge is at the origin.

A: Find the electric field at the point x1 = 70 cm ,y1 = 0.

Express your answers using two significant figures. Enter the x and y components of the electric field separated by a comma.

Ex,Ey= (N/C)

B:

Find the electric field at the point x2 = 50 cm , y2 = 50 cm .

Express your answers using two significant figures. Enter the x and y components of the electric field separated by a comma.

C:

Find the electric field at the point x3 = -50 cm , y3 = 80 cm .

Express your answers using two significant figures. Enter the x and y components of the electric field separated by a comma.

N/C

2.)

A straight wire 15 m long carries 28 C distributed uniformly over its length.

Part A

Part complete

What is the line charge density on the wire?

Express your answer using two significant figures.

1.9

SubmitPrevious Answers

Correct

Part B

Find the electric field strength 16 cm from the wire axis, not near either end.

Express your answer using two significant figures.

(N/C)

Part C

Find the electric field strength 440 m from the wire.

Note: make suitable approximation. Express your answer using two significant figures.

E= (N/C)

Explanation / Answer

Electric field magnitude
E = k*q/r2

r = sqrt(x2 + y2)

The direction
= arctan(y/x)

X-component = E * cos()
Y-component = E * sin()

A.

E=9*109*50*10-6/0.72

=918367.35

=0

So it has only x component and magnitude is 918367.35N/C

B.

E=9*109*50*10-6/0.52+0.52

E=900000N/C

And,=45

So

x component=63696.1031N/C

y component=63696.1031N/C

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