1b.4 At certain location, an electron feels an electric force of 3.2 x 107 N to

Question

1b.4 At certain location, an electron feels an electric force of 3.2 x 107 N to the left, (a) What is the magnitude and direction of the electric field at that point? [Answer: 200 N/C to the right] (b) If you put a p changel (c) What is the magnitude and direction of the electric force acted on the proton? Answer: 3.2 x 101 N to the right] roton at the same point, does the electric field change? [Answer: No 1b.5 At certain location, A charge q +2.0 C experiences a force of 6.0 x 10 N to the right. (a) What is the magnitude and direction of the electric field at that point? IAnswer: 3.0 x 10 N to the right] (b) If this field is caused by a charge of Q 1.0 C, where should it be? [Answer: 1.7 m to the left) (e) If this field is caused by a charge of Q-3.0 C, where should it be? lAnswer: 3.0 m to the right]

Explanation / Answer

a)

Let the right direction be positive.

F = -3.2*10^-17 N

Q = -1.602*10^-19 C

use:

F = Q*E

-3.2*10^-17 N = (-1.602*10^-19 C) * E

E = 200 N

positive sign shows that it is to the right

Answer: 200 N to the right

b)

Electric field is existing. We are puting charge in the field and the charge is feeling a force.

The electric field will not change because of charge

c)

E = 200 N

Q = 1.602*10^-19 C

use:

F = Q*E

= 1.602*10^-19 C * 200 N

= 3.2*10^-17 N

positive sign shows that it is to the right

Answer: 3.2*10^-17 N to the right

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