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Questions and Answers
The diagram below represents the electric field in the region of two small charged spheres, A and B. What is the sign of the net charge on A and B?
The diagram below represents the electric field in the region of two small charged spheres, A and B. What is the sign of the net charge on A and B?
- A is negative and B is positive.
- A is negative and B is negative. (correct)
- A is positive and B is negative.
- A is positive and B is positive.
What is the magnitude of the force exerted on one electron in a 5 N/C electric field?
What is the magnitude of the force exerted on one electron in a 5 N/C electric field?
- 8 x 10-19 N (correct)
- 5 N
- 1.6 x 10-19 N
- 1 N
The electroscope shown in the diagram below is made completely of metal and consists of a knob, a stem, and leaves. A positively charged rod is brought near the knob of the electroscope and then removed. The motion of the leaves results from electrons moving from the:
The electroscope shown in the diagram below is made completely of metal and consists of a knob, a stem, and leaves. A positively charged rod is brought near the knob of the electroscope and then removed. The motion of the leaves results from electrons moving from the:
- knob to the leaves and then back to the knob
- leaves to the knob, only
- leaves to the knob and then back to the leaves (correct)
- knob to the leaves, only
Flashcards
Net charge on A and B?
Net charge on A and B?
A is negative and B is negative. Electric field lines point towards negative charges.
Force on an electron in 5 N/C field?
Force on an electron in 5 N/C field?
8 x 10^-19 N. Calculated using F = qE, where q is the charge of an electron (1.6 x 10^-19 C) and E is the electric field (5 N/C).
Electroscope leaves motion?
Electroscope leaves motion?
Leaves move to the knob then back to the leaves. Positive charge attracts electrons, then removal causes redistribution.
Study Notes
- The diagram represents the electric field in a region with two small charged spheres, A and B.
Net Charge Sign
- The net charge on A is negative
- The net charge on B is negative
Magnitude of Force
- The magnitude of the force exerted on one electron in a 5 N/C electric field is 8 x 10^-19 N.
Electroscope
- The electroscope consists of a metal knob, stem, and leaves.
- A positively charged rod is brought near the knob and then removed.
- The motion of the leaves results from electrons moving from the leaves to the knob and then back to the leaves.
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