12. A beam of unknown charged particles passes atright angle to the direction of
ID: 1733350 • Letter: 1
Question
12. A beam of unknown charged particles passes atright angle to the direction of magnetic field of 9.010-2 T. If the speed of the particles is 3.0104 m/s and force experienced by a particle is 8.6410-16 N, how many electric charges are carried by oneparticle?
Explanation / Answer
12. A beam of unknown charged particles passes at right angleto the direction of magnetic field of 9.0 10-2 T. If the speed of the particles is 3.0 104 m/s and forceexperienced by a particle is 8.64 10-16 N, how manyelectric charges are carried by oneparticle? {Force} = F = {Charge}*{Velocity}*{Magnetic Field Strength} = Q*V*B ----> {Charge} = Q = F/(V*B) ----> {Charge} = (8.64e-16)/((3.0e+4)*(9.0e-2)) ----> {Charge} = 3.2e-19 Coulombs ----> {#Electric Charges} = {Charge}/(1.6e-19) ----> {# Electric Charges} = (3.2e-19)/(1.6e-19) ----> {#Electric Charges Per Particle} = 2 .
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