ch26_p76 - 76. (a) The charge q that flows past any cross...

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
7 6. (a) The charge q that flows past any cross section of the beam in time t is given by q = i t , and the number of electrons is N = q / e = ( i / e ) t . This is the number of electrons that are accelerated. Thus N = × × (. . .. 050 160 10 31 10 6 19 11 A)(0.10 10 s) C (b) Over a long time t the total charge is Q = nqt , where n is the number of pulses per unit time and q is the charge in one pulse. The average current is given by i avg = Q / t = nq . Now q = i t = (0.50 A) (0.10 × 10 –6 s) = 5.0 × 10 –8 C, so
Background image of page 1
This is the end of the preview. Sign up to access the rest of the document.
Ask a homework question - tutors are online