Approximately what percentage of the energy deposited in the target by electrons is converted to x-rays?

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Multiple Choice

Approximately what percentage of the energy deposited in the target by electrons is converted to x-rays?

Explanation:
Most of the energy that electrons deposit in the X-ray tube target becomes heat. Only a small fraction is emitted as x-rays through processes like bremsstrahlung and characteristic radiation. In a typical tube, the efficiency of turning electrical energy into x-rays is very low—roughly a percent—so nearly all the energy ends up heating the target rather than as x-rays.

Most of the energy that electrons deposit in the X-ray tube target becomes heat. Only a small fraction is emitted as x-rays through processes like bremsstrahlung and characteristic radiation. In a typical tube, the efficiency of turning electrical energy into x-rays is very low—roughly a percent—so nearly all the energy ends up heating the target rather than as x-rays.

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