Heat is produced at a rate of 250 J per second in an X-ray tube when potential difference of 20 kV is applied between filament and target metal. How much current flows through the tube ? Assume only a small fraction of kinetic energy of electrons is converted into X-rays.

Heat is produced at a rate of 250 J per second in an X-ray tube when p

1.	Heat is produced at a rate of 250 J per second in an X-ray tube when potential difference of 20 kV is applied between filament and target metal. How much current flows through the tube ? Assume only a small fraction of kinetic energy of electrons is converted into X-rays.
Answer» SOLUTION :If we assume that entire kinetic of ELECTRONS is GETTING CONVERTED into heat then : P=V I `RARR` I=P/V =250/20000=0.0125 A

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Heat is produced at a rate of 250 J per second in an X-ray tube when potential difference of 20 kV is applied between filament and target metal. How much current flows through the tube ? Assume only a small fraction of kinetic energy of electrons is converted into X-rays.

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