ae-1262-em-by-magnetic-eye-helical-crt-solenoid-power-supply- Measurment of elm by Helical method
Apparatus Required:cathode ray tube solenoid of proper dimension in the interior of which a cathode ray tube placed, power supply, control to operate the tube, operate solenoid, provide variable ac voltage, for deflection plates, ammeter, voltmeter,commutator
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