5. A detector counted 123 000 electrons. What is the net charge?

University Physics Volume 2
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Chapter7: Electric Potential
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Problem 61P: Two large charged plates of charge density 30C/m2 face each other at a separation of 5.0 mm. (a)...
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2. Two 10 microcoulombs charges are located (-2, 0) and (2, 0). Two -10 microcoulomb charges are
located at (0, 2) and (0, -2) cm. Find the electric potential at the origin. See Fig.2
A 20 microcoułomb charge is located (0, 3) cm and a -20 microcoulomb charge is located at (0, -
3) cm. Find the electric potential at (4,0) cm. See Fig. 3
4. A 20 microcoulomb charge is located (0, 3) cm and a -20 microcoulomb charge is located at (0, -
3) cm. In which direction is the net electric field at (4,0) cm? See Fig.3
5. A detector counted 123 000 electrons. What is the net charge?
3.
Transcribed Image Text:2. Two 10 microcoulombs charges are located (-2, 0) and (2, 0). Two -10 microcoulomb charges are located at (0, 2) and (0, -2) cm. Find the electric potential at the origin. See Fig.2 A 20 microcoułomb charge is located (0, 3) cm and a -20 microcoulomb charge is located at (0, - 3) cm. Find the electric potential at (4,0) cm. See Fig. 3 4. A 20 microcoulomb charge is located (0, 3) cm and a -20 microcoulomb charge is located at (0, - 3) cm. In which direction is the net electric field at (4,0) cm? See Fig.3 5. A detector counted 123 000 electrons. What is the net charge? 3.
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The number of electrons counted by the electron is n = 123000 electrons

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