A proton travels at a speed of 2.0..*.10Ò meters/second. Its velocity is at right angles with a magnetic field of strength 5.5..*.10È³ tesla. What is the magnitude of the magnetic force on the proton?

A. 1.0x10^-15 newtons
B. 1.8x10^-15 newtons
C. 2.1x10^-16 newtons
D. 5.5x10^-16 newtons

Question

A proton travels at a speed of 2.0..*.10Ò meters/second. Its velocity is at right angles with a magnetic field of strength 5.5..*.10È³ tesla. What is the magnitude of the magnetic force on the proton?

A. 1.0x10^-15 newtons
B. 1.8x10^-15 newtons
C. 2.1x10^-16 newtons
D. 5.5x10^-16 newtons

schrodingers_cat · Answer

$$F = qv \times B$$

schrodingers_cat · Answer

Since the velocity and magnetic field are perpendicular it simplifies to 

$$F = qvBsin(90) = qvB$$