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What is happening to the electron in the tube to make it deflect more when Vd...

What is happening to the electron in the tube to make it deflect more when Vd is increased? What is happening to the electron in the tube to make it deflect more when Vaccel -1 is increased (means electron is deflected less when Vaccel is increased) ?

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Answer #1

We know that Vacc is the accelerating potential. The energy balance is such that

1/2 m v^2 = e Vacc

The electon beam get deflected by the electric field between the plates which exerts a force Fe, the voltage thus produced is the deflection voltage.

Its the magnetic field strengthwhich causes the deflection of electron beam, So by increasing the Vacc, the velocity of the beam will increase, not the deflection.

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