Electric Forces And Electric Fields (15)
Chapter 15 Physics - Multiple Choice
- 1.A very small ball has a mass of 5.0e-3 Kg and a charge of 4 uC. What magnitude electric field directed upward will balance the weight of the ball?
- A.
1.2e4 N/C
- B.
8.2e2 N/C
- C.
2.0e-2 N/C
- D.
5.1e6 N/C
- E.
3.7e3 N/C
- 2.Estimate the magnitude of electric field strenght due to the proton of hydrogen atom at a distance of 5.39e-11m. The expected position of the electron in the atom.
- A.
10^-11 n/c
- B.
10^8 n/c
- C.
10^14 n/c
- D.
10^6 n/c
- E.
10^12 n/c
- 3.The magnitude of the electric force between two protons is 2.3e-26 N. how far apart are they?
- A.
0.10m
- B.
0.022m
- C.
3.1m
- D.
0.0057m
- E.
0.48m
- 4.
- A.
1.0 N/C
- B.
-1.0 N/C
- C.
0
- D.
0.25 N/C
- E.
It varies
- 5.
- A.
0
- B.
-560
- C.
-340
- D.
260
- E.
170
- 6.
- A.
2.56 cm
- B.
5.12 cm
- C.
11.2 cm
- D.
3.34 m
- E.
4.24 m
- 7.
- A.
1.15
- B.
-2.24
- C.
3.91
- D.
-1.15
- E.
0.863
- 8.
- A.
F/12
- B.
F/3
- C.
F/6
- D.
3F/4
- E.
3F/2
- 9.
- A.
Near a long uniformly charge wire
- B.
Above a large uniformly charged plane
- C.
Inside a uniformly charged ball
- D.
Outside a uniformy charged sphere
- E.
Gauss law can be readily applied to find the electric field in all contexts
- 10.
- A.
Repel
- B.
Attract
- C.
Attract or repel
- D.
Exert no electrostatic force
- E.
Charge insulator always spontaneously discharges
- 11.
- A.
The density matter is too great
- B.
The positive nuclei of your body repel the positive nuclei of the atoms of the ground
- C.
The density of the ground is greater than the density of your body
- D.
Atoms are bound together by chemical bonds
- E.
Electrons on the ground's surface of your feet repel one another
- 12.
- A.
Upward and to the right
- B.
To the right
- C.
Downward
- D.
Downward and to the left
- E.
Field is zero at that point
- 13.
- A.
It becomes larger
- B.
It becomes smaller
- C.
It stays the same
- D.
It changes unpredictably
- E.
It is zero
- 14.
- A.
Increase masurably
- B.
Increase by an amount to small to measure directly
- C.
Stay unchanged
- D.
Decrease by an amount to small to measure directly
- E.
Decrease masurably
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