The power input in an X-ray tube is increased | vedclass

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(C) The power input $P$ to an $X$-ray tube is given by the product of the accelerating voltage $V$ and the beam current $I$ (which is determined by th

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Increasing the filament current.

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(C) The power input $P$ to an $X$-ray tube is given by the product of the accelerating voltage $V$ and the beam current $I$ (which is determined by the filament current),i.e.,$P = V 	imes I$.Increasing the filament current increases the temperature of the filament,which leads to a higher rate of thermionic emission of electrons from the cathode. This increase in the number of emitted electrons results in a higher beam current $I$.Since $P = V 	imes I$,an increase in the beam current $I$ directly leads to an increase in the power input $P$ to the $X$-ray tube.

The power input in an $X$-ray tube is increased by:

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