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8 marksLogic Gates

CSEC Physics · May/June 2010 · Paper 2 · Question 3(b)(ii)

The truth table of a logic gate is shown for inputs A and B and output C.

Complete the truth table for the following logic circuit.

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Other parts of this question

  1. 3(a)(i)Sketch the Vout – t graph when switch S is open.[1 mark]
  2. 3(a)(ii)Sketch the Vout – t graph across diode D when switch S is closed.[1 mark]
  3. 3(a)(iii)Sketch the V – t graph across a battery power source.[1 mark]
  4. 3(a)(iv)What is the similarity in the voltage between (ii) and (iii)?[1 mark]
  5. 3(a)(v)How can you use the circuit in Figure 1 to determine whether or not a semiconductor diode is defective?[2 marks]
  6. 3(b)(i)State the type of logic gate.[1 mark]

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