Question

A proton enters a magnetic field of flux density $2 \times 10 ^ { 7 } \mathrm {~m} / \mathrm { sec }$ at an angle of $30 ^ { \circ }$ with the field. The force on the proton will be

• A.
• B.
• C.
• D.

Answer 1

Answer: (A)

Answer 2

$F = q v B \sin \theta$