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Electric potential

Two electrode...

Question

Two electrodes are maintained at a potential difference of 100V. How much kinetic energy would an electron gain,moving from cathode to anode ?

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Solution

The kinetic energy of an electron accelerated through a potential difference of V volts is given by the equation:

KE= eV

where e is the electron charge (1.6x10^-19 C)

Here, V=100V

So,
KE=1.6× 10^-19 ×100
= 1.6 ×10^-17 J

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