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Find the current in mA (milliamps) produced by the beam in problem 5 if it has a speed of 4.53 × 105 m/s and a cross-sectional radius of 4.00 mm. (Answer in 5 sig. figs.) Use these numbers!!

QUESTION 1
Find the current in mA (milliamps) produced by
the beam in problem 26.5 if it has a speed of
4.53 x 105 m/s and a cross-sectional radius of
4.00 mm. (5 sig. figs.)

•5 SSM www A beam contains 2.0 × 108 doubly charged posi-
tive ions per cubic centimeter, all of which are moving north with
a speed of 1.0 × 105 m/s. What are the (a) magnitude and (b) direc-
tion of the current density 7? (c) What additional quantity do you
need to calculate the total current i in this ion beam?

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