Physics (Essay) Paper 2 May/June 2015

Question 6

(a) What is doping in a semi-conductor?
(b) Draw the symbol for OR gate.

Observation

The circuit above consist of an a.c. voltage input, a diode, a resistor and a voltmeter.

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  •   Identify the circuit.
  •  Draw the waveform for the output voltage.
  • The expected answer is:

      Half-wave rectifier (circuit)

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