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The velocity of charge carriers of current (about 1 amp) in a metal under normal conditions is of the order

1. a fraction of mm/sec
2. velocity of light
3. several thousand metres/second
4. a few hundred metres per second

Correct answer: a fraction of mm/sec

Solution

The drift velocity of charge carriers in a conductor carrying a current of about 1 ampere is typically very small, on the order of a fraction of a millimeter per second, due to the large number of free electrons in the conductor.

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