How Do You Calculate the Acceleration of an Electron in a Magnetic Field?

[tnkfub]

An electron has a velocity of 5 x 10^6 m / s perpendicular to a magnetic field of 1.5 T. What force and acceleration does the elcetron experience?

ok i get the Force part by using F=qvB, how do i get the Acceleration?

F= 1.2x10^-12 N A= ?

 

[d_leet]

Remember Newton's second law? F=ma, F is force, m is mass, a is acceleration.

 

[tnkfub]

Remember Newton's second law? F=ma, F is force, m is mass, a is acceleration.

i know this but how do i get the acceleration when i don't have the mass of the electron?

 

[ranger]

i know this but how do i get the acceleration when i don't have the mass of the electron?

electron mass = 9.10938188 × 10^-31 kilograms

All electrons have approx. the same mass.

 

[tnkfub]

electron mass = 9.10938188 × 10^-31 kilograms

All electrons have approx. the same mass.

f=ma, a = m/f , a = 9.1x10^-31 / 1.2x10^-12 = 7.6 x 10 - 19

the answer according to the back of the textbook is way different a = 1.32x10^18m/s^2

maybe the answer is wrong? in the book

 

[ranger]

f=ma, a = m/f , a = 9.1x10^-31 / 1.2x10^-12 = 7.6 x 10 - 19

the answer according to the back of the textbook is way different a = 1.32x10^18m/s^2

You solved for acceleration incorrectly.