Mathematics · Cathode Ray Tube Calculations

A CRT with 2 cm long deflecting plates has an anode voltage of 2 kV. The parallel deflecting plates are 5 mm apart, and the screen is 30 cm from the centre of the plates. If the input voltage is applied through an amplifier with an overall gain of 100, determine the input voltage required to deflect the beam by 3 cm.

Verified Solution4 OptionsUpdated: October 2026👁️1 View

10.1 V
21 V✓
310 V
4100 V

Correct answer

1 V

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