Asked by Cameron

An X-ray tube used for cancer therapy operates at 33 MV with a beam current of 79 mA
striking a metal target.
Calculate the power of this beam.
Answer in units of W
Answered by drwls
Power = (voltage)*(current)
= 33*10^6 V * 79*10^-3 A
= 2.6*10^6 W = 2.6 Megawatts
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