الفيزياء العامة الجزء الثاني#موقع الفيزياء.كوم

Multiple choice question for part 1
[20] A charge of 190 C is at the center of a cube of side 85.0 cm long. (a)
Find the total flux through each face of the cube. (b) Find the flux through
the whole surface of the cube.
a. (a) 3.58 10 6 Nm 2 /C; (b) 2.15 10 7 Nm 2 /C
b. (a) 4.10 10 7 Nm 2 /C; (b) 4.10 10 7 Nm 2 /C
c. (a) 1.29 10 8 Nm 2 /C; (b) 2.15 10 7 Nm 2 /C
d. (a) 6.83 10 6 Nm 2 /C; (b) 4.10 10 7 Nm 2 /C
[21] A 30.0 cm diameter loop is rotated in a uniform electric field until the
position of maximum electric flux is found. The flux in this position is
found to be 3.20 x 105 Nm2/C. What is the electric field strength?
a. 3.40 10 5 N/C
b. 4.53 10 6 N/C
c. 1.13 10 6 N/C
d. 1.70 10 5 N/C
[22] Consider a thin spherical shell of radius 22.0 cm with a total charge of
34.0C distributed uniformly on its surface. Find the magnitude of the
electric field (a) 15.0 cm and (b) 30.0 cm from the center of the charge
distribution.
a. (a) 6.32 10 6 N/C; (b) 3.40 10 6 N/C
b. (a) 0 N/C; (b) 6.32 10 6 N/C
c. (a) 1.36 10 7 N/C; (b) 3.40 10 6 N/C
d. (a) 0 N/C; (b) 3.40 10 6 N/C
[23] A long, straight metal rod has a radius of 5.00 cm and a charge per unit
length of 30.0 nC/m. Find the electric field 100.0 cm from the axis of the
rod, where distances area measured perpendicular to the rod.
a. (1.08 10 4 N/C)r
b. (2.70 10 2 N/C)r
c. (5.39 10 2 N/C)r
d. (0 N/C)r
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