Question

In: Physics

if an electron travels 0.200 m from an electron gun to a TV screen in 13.0...

if an electron travels 0.200 m from an electron gun to a TV screen in 13.0 ns, what voltage ( inV) was used to accelerate it? (Note that the voltage you obtain here is lower than actually used in TVs to avoid the necessity of relativistic corrections.)

Expert Solution

Let the voltage used to accelerate it was V.

The charge of an electron is q=1.6021766210^-19 C.

The mass of an electron is m=9.1093835610^-31 kg.

Let the final velocity of the electron is v.

The distance is d=0.200 m.

The time taken is t=13.0 ns.

The final velocity of the electron is

=> The provided electric energy is used to accelerate the electron.

The voltage used to accelerate it was 672.855629 Volts.

genius_generous answered 1 year ago

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