الفيزياء العامة الجزء الثاني#موقع الفيزياء.كوم

Multiple choice question for part 1
a. 1.33 10 18 C
b. 7.50 10 -19 C
c. 1. 17 10 -14 C
d. 1.60 10 -19 C
[32] How much work is done (by a battery, generator, or some other source
of electrical energy) in moving Avagadro's number of electrons from an
initial point where the electric potential is 9.00 V to a point where the
potential is -5.00 V? (The potential in each case is measured relative to a
common reference point.)
a. 0.482 MJ
b. 0.385 MJ
c. 1.35 MJ
d. 0.867 MJ
[33] At a certain distance from a point charge, the magnitude of the electric
field is 600 V/m and the electric potential is -4.00 kV. (a) What is the
distance to the charge? (b) What is the magnitude of the charge?
a. (a) 0.150 m; (b) 0.445 C
b. (a) 0.150 m; (b) -1.50 C
c. (a) 6.67 m; (b) 2.97 C
d. (a) 6.67 m; (b) -2.97 C
[34] An electron moving parallel to the x-axis has an initial speed of 3.70
10 6 m/s at the origin. Its speed is reduced to 1.40 10 5 m/s at the point x =
2.00 cm. Calculate the potential difference between the origin and that
point. Which point is at the higher potential?
a. -38.9 V, the origin
b. 19.5 V, x
c. 38.9 V, x
d. -19.5 V, the origin
pppppppppppppppppp
Solution of the multiple choice questions
120
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