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With reference to the circuit shown: (i) Identify the electronic components A, B, C and D; (ii) Describe the function of components B and C in the circuit. - Leaving Cert Engineering - Question c - 2007

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With-reference-to-the-circuit-shown:--(i)-Identify-the-electronic-components-A,-B,-C-and-D;--(ii)-Describe-the-function-of-components-B-and-C-in-the-circuit.-Leaving Cert Engineering-Question c-2007.png

With reference to the circuit shown: (i) Identify the electronic components A, B, C and D; (ii) Describe the function of components B and C in the circuit.

Worked Solution & Example Answer:With reference to the circuit shown: (i) Identify the electronic components A, B, C and D; (ii) Describe the function of components B and C in the circuit. - Leaving Cert Engineering - Question c - 2007

Step 1

Identify the electronic components A, B, C and D

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Answer

The electronic components identified in the circuit are as follows:

  • A: Light bulb
  • B: Transistor
  • C: Capacitor (polarised)
  • D: Resistor

Step 2

Describe the function of components B and C

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104 rated

Answer

The functions of the components B and C in the circuit are as follows:

  • Component B (Transistor): The transistor acts as an electronic switch, turning the light bulb on when it is activated. When there is no current supplied to the base leg of the transistor, it will turn the bulb off, controlling the flow of electricity effectively.

  • Component C (Capacitor): The capacitor gathers, stores, and releases electrical energy. In this circuit, the size of the capacitor determines how long the light bulb remains lit after being activated. This function enables the bulb to stay on for a specified duration even after the power supply is cut.

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