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Questions and Answers
If a current of 2 mA is flowing in a copper wire, how many electrons cross any point in the conductor per 2 seconds?
- 1.25 \times 10^{16}
What is the current developed when 106 electrons are flowing through a wire per second?
- 1.6 \times 10^{-19} A
In a hydrogen atom, if the electron moves in an orbit of radius 5.0 \times 10^{-11} m with a speed of 2.2 \times 10^5 ms^{-1}, what is the equivalent current?
- 112 mA
If 62.5 \times 10^{18} electrons per second are flowing through a wire of cross-section 0.1 m$^2$, what is the value of the current flowing?
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If the current flowing through a wire depends on time as $I = 4t^2 - 2t - 5$, what is the current at a time t = 2 seconds?
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