In a uniform magnetic field, the radius of an electron’s circular orbit is determined by:
(mv)/(Be) = r
Where,
m = electron mass
v = electron velocity
B is the strength of the magnetic field.
e = electron charge
The radius and velocity are directly proportional because the electron’s mass, charge, and magnetic field are all constant.
The radius will likewise double if the velocity doubles.
Therefore, if the orbit’s initial radius is 2 cm, it will double to 4 cm after the speed is doubled.
Thus, 4 cm is the response.
In a uniform magnetic field, the radius of an electron’s circular orbit is determined by:
(mv)/(Be) = r
Where,
m = electron mass
v = electron velocity
B is the strength of the magnetic field.
e = electron charge
The radius and velocity are directly proportional because the electron’s mass, charge, and magnetic field are all constant.
The radius will likewise double if the velocity doubles.
Therefore, if the orbit’s initial radius is 2 cm, it will double to 4 cm after the speed is doubled.
Thus, 4 cm is the response.