An electron moving perpendicular to a magnetic field of 3.2× 10 -2 T moves in a
ID: 1667543 • Letter: A
Question
An electron moving perpendicular to a magnetic field of 3.2× 10-2 T moves in a circle of radius 0.40 cm.How fast is this electron moving?
Answer
Two long parallel wires carry currents of 20 A and 5.0 A inopposite directions. The wires are separated by 0.20 m. At whatpoint between the two wires are the contributions from the twowires the same?
The magneticfield at a distance of 2 cm from a current carrying wire is 4T. What is the magnetic field at a distance of 4 cm from thewire?
An electron moving perpendicular to a magnetic field of 3.2× 10-2 T moves in a circle of radius 0.40 cm.How fast is this electron moving?
Answer
Explanation / Answer
Given magnitude of magnetic field B =3.2*10-2 T radius of the circle = 0.40cm mass ofelectron = 9.31*10-31 kg charge onelectron q - 1.6*10-19C velocity of electron v =? weknow that magnetic force F = B q V mv2 / r = B q v v = B q r / m plug thevalues and get the answers
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