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Basic Electricity & Electronics

Ohm's Law & Power

Relating voltage, current and resistance, and calculating dissipated power.

Practise this topic
6% of the exam4 questions in the bank

Lessons

  • Ohm's Law without the panic

    One relationship, three rearrangements, and the power formulas that fall out of it. This is the most reliable source of marks in the whole paper.

    8 min