1 mA flows down a 1 mm diameter copper wire. How many billions of electrons pass...

Question

Question

1 mA flows down a 1 mm diameter copper wire. How many billions of electrons pass through a cross section of the wire each μ s (microsecond)?

Answer 1

Answer #1

current through wire is given by I = Q t Q = It Q = O’AX 1o°s .gc 10 also Q = ne ge n = 10 1.6 x 10 190 n = 6.25 X 109 ma 6.2

Answer 2

Answer #2

The current through the wire is, i= 9 t ne t n II e n_(1.0x10) 1.6x10-19 = 6.25x105 ele/s t In 1.0 us the number of electrons

Answer 3

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