The picture tube in a particular television draws a current of 13 A. How many electrons strike the viewing?

3 ⤊

The picture tube in a particular television draws a current of 13 A. How many electrons strike the viewing?

The picture tube in a particular television draws a current of 13 A. How many electrons strike the viewing screen every second?
?electrons/s

2007-09-15 21:03:15 · 2 answers · asked by Anonymous in Science & Mathematics ➔ Physics

2 answers

13A is 13 coulombs/second. Each electron has a charge of -1.6*10^-19 coulombs, so the number of electrons is

13/1.6 * 10^19 = 8.13 * 10^19 electrons/sec

2007-09-15 21:11:42 · answer #1 · answered by gp4rts 7 · 1⤊ 5⤋

1 coulomb = 6.24 * 10 ^ (18) electrons
1 A = 1 coulomb / sec

there are 13 * 6.24 * 10 ^ (18) electrons strike the crt per second

2007-09-16 09:06:25 · answer #2 · answered by Anonymous · 2⤊ 3⤋