An electron enters a region of space where there is a magnetic field
= 7 mT
with a velocity
= ( 9 × 106 m/s)
+ ( 7 × 106 m/s)
+ ( 5 × 106 m/s)
. What is the spacing of the circles of the helix on which the electron moves?
A) 9.5 cm
B) 1.5 cm
C) 7.1 cm
D) 2.6 cm
E) 5.7 cm
Correct Answer:
Verified
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