Answer
a) (1) $-x$
b) $1.04\times10^{-6}T$
Work Step by Step
a). Magnetic field is towards left i.e. (-x) direction. (1)
b). $F=qvB$
or, $B=\frac{F}{qv}=\frac{5\times10^{-19}}{1.6\times10^{-9}\times3\times10^{6}}=1.04\times10^{-6}T$
College Physics (7th Edition)
by Wilson, Jerry D.; Buffa, Anthony J.; Lou, Bo
Published by
Pearson
ISBN 10:
0-32160-183-1
ISBN 13:
978-0-32160-183-4
Chapter 19 - Magnetism - Learning Path Questions and Exercises - Exercises - Page 691: 8
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