An electron travels at a speed of 5.11×10^7 m/s along the z-axis. What is the magnetic...
An electron travels at a speed of 5.11×10^7 m/s along the z-axis. What is the magnetic field at the point (0.00 cm,9.00 cm,9.00 cm) when the electron passes through the origin? -3.57×10-17 î T, 3.57×10^-17 î T, -7.14×10^-17 î T, 7.14×10^-17 î T,
Homework Answers
position vector
r = 0.09j + 0.09 k
field at the given position due to moving charge
B = ( uo/ 4 pi) q ( v × r) / r^3
B = 10^-7* 1.6*10^-19* * 10^7*( 5.11 k × ( 0.09j + 0.09 k) ) / ( 0.09^2 + 0.09^2)^1.5
B = 7.76*10^-17* ( - 5.11* 0.09 i)
B = - 3.57*10^-17 i
option (a) is correct
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