An electron of charge $‘e’$ coulomb passes through a potential difference of $V$ volts. Its energy in ‘joules’ will be
$V/e$
$eV$
$e/V$
$V$
(b) $K = QV = \,e \times \,V = \,eV$
How mass of an electron can be obtained ?
In Thomson spectrograph experiment, four positive ions $P,Q,R$ and $S$ are situated on $Y-X$ curve a shown in the figure
The mass of the electron varies with
Cathode rays are produced when the pressure is of the order of
An $\alpha$ particle is accelerated through a p.d of ${10^6}$ volt then $ K.E$ . of particle will be ………. $MeV$
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