AP EAMCET2015PhysicsMagnetic Effects of Current
In a crossed field, the magnetic field induction is 2.0 ~T and electric field intensity is 20 10^3 ~V / m . At which velocity the electron will travel in a straight line without the effect of electric and magnetic fields?
Options
- A20 16 10^3 ~ms ⁻¹
- B10 10^3 ms⁻¹
- C20 10^3 ms⁻¹
- D40 10^3 ms⁻¹
Correct answer
B. 10 10^3 ms⁻¹
Step-by-step solution
e V B=e E where, e= electronic charge and v= velocity of electron v= E B v= 20 10^3 2.0 =10 10^3 ~ms ⁻¹