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Question 21.99 Electric Field

# Question 21.99 Electric Field - Electric Field Question...

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Electric Field Question 21.99 Two 1.20 m non-conducting wires meet at a right angle. One segment carries a + 2.50 μC of charge distribution uniformly along its length, and the other carries -2.50 μC distributed along it as shown in the figure. a) Find the magnitude and direction of the electric field these wires produce at point P, which is 60.0cm from each wire. b) If an electron is released at P , what is the magnitude and direction of the net force that these wires exert on it.

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Electric Field Answer 21.99 To answer this problem we must have some starting ground. The first is of course Coulomb's formula for electric field. However, since this problem involves two continuously charged bodied we must use the integral from of Coulomb's law. r r dq k E d E a a ˆ 2 - = = The second starting concept is that the electric fields from each separate wire add through the idea of superposition.
r r dq k E d E a a ˆ 2 - = = For line uniform line charge we must replace dq

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