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1 SOLVE THE FOLLOWING A. A proton is released at x =2 m in a constant electric f

ID: 1771993 • Letter: 1

Question

1 SOLVE THE FOLLOWING

A. A proton is released at x =2 m in a constant electric field of strength 1000 N/C acting in the positive x direction. What is the change in the electric potential associated with the proton after it travels to x = 5 m?   

B.A 250 N/C uniform electric field is created between two plates that are separated by 6 cm. Find the work done by the electric force on an electron that moves from the positive plate to the negative plate.  

C.A 175 N/C uniform electric field is created between two plates that are separated by 4 cm. Find the work done by the electric force on an electron that moves from the positive plate to the negative plate.

Explanation / Answer

A)

Given E = 1000 N/c

the distance travelled by proton is d = 5-2 = 3 m

the electric potential is

V = E * d = 1000 * 3

V = 3000 V

B)

E = 250 N/C

d = 6 cm = 0.06 m

the potential difference v = 250 * 0.06

V = 15 V

the work done on an electron is

W = -e * V

W = - 1.6 * 10^-19 * 15

W = 2.4 * 10^-18 J

c)

E = 175 N/C

d = 4 cm = 0.04 m

the potential difference v = 175 * 0.04

V = 7 V

the work done on an electron is

W = -e * V

W = - 1.6 * 10^-19 * 7

W = 1.12 * 10^-18 J