# physics

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1. What is a typical drift speed of electrons that make up a current in a typical DC circuit?
(zero, less than 1 cm/s, about 10 m/s, or the speed of light)
2. What is the typical drift speed in a typical AC circuit? (zero, less than 1 cm/s, about 10 m/s, or the speed of light)

• physics -

1. less than 1 cm/s. The exact number depends upon current and wire diameter

2. On the average, zero. Electrons go back and forth in AC circuits. Maximum values are comparable to DC, but plus and minus

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