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Electronics

IND-EL is worth about 25 marks out of 100 in recent HSC Industrial Technology papers. Practise 46 exam-style questions (multiple choice, multi-part, short answer) with instant marking and a worked solution for every question.

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Topic notes

Electronics for the HSC Industrial Technology written paper — components, Ohm's law and circuit calculations, semiconductors, sensors and actuators, digital logic, power supplies, PCB manufacture, soldering, test equipment, WHS and e-waste.

  1. 1What you need to know
  2. 2Components
  3. 3Circuit calculations
  4. 4Sensors, outputs and digital electronics
  5. 5Power supplies
  6. 6Manufacturing processes
  7. 7Testing and fault-finding
  8. 8WHS and the environment
  9. 9Common mistakes
  10. 10Exam tips
  11. 11Links to other topics
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Example questions

Example 1 · 1 mark · multiple choice

A 470 Ω resistor is connected across a 9 V battery. What current flows through it?

  1. A1.9 mA
  2. B4.2 mA
  3. C19.1 mA
  4. D52.2 mA

Example 2 · 1 mark · multiple choice

A four-band resistor is marked yellow, violet, orange, gold. What is its value?

  1. A47 kΩ ± 5%
  2. B473 Ω ± 5%
  3. C4.7 kΩ ± 5%
  4. D47 kΩ ± 10%

Example 3 · 4 marks · multi-part

A 100 Ω resistor R₁ is connected in series with a parallel pair: R₂ = 220 Ω and R₃ = 330 Ω. The network is connected across a 9 V supply.

Answers and worked solutions appear when you practise these questions.

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