In the experiment performed to measure the charge to mass ratio of electron if we increase the magnetizing current the radius of electron beam circle will_________a.Increaseb.Remain samec.Decreased.Become helical pathe.None of theseClear my choice
Question
In the experiment performed to measure the charge to mass ratio of electron if we increase the magnetizing current the radius of electron beam circle will_________a.Increaseb.Remain samec.Decreased.Become helical pathe.None of theseClear my choice
Solution
The radius of the electron beam circle will increase.
Here's why:
The charge to mass ratio of an electron (e/m) is given by the formula e/m = 2V/(B^2*r^2), where V is the accelerating voltage, B is the magnetic field strength, and r is the radius of the electron's path.
If we increase the magnetizing current, the magnetic field strength (B) increases. According to the formula, if B increases and all other factors remain constant, then r (the radius) must also increase in order for the equation to remain balanced.
So, the correct answer is a. Increase.
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