OCR Applied Science: 6.3 Electrical Properties

This PowerPoint presentation with worked examples and student activities covers:

Topic 6.3 of Module 1: Science Fundamentals of the OCR Applied Science Spec.

• Current as flow of charge in a conductor.
• Use the equation: I = ΔQ ÷ Δt
• Ohm’s law illustrates the relationship of V ∝ I
• Use the equation: potential difference (V) = current (A) × resistance
• Use the equations for adding resistors in series and parallel
• Compare electromotive force and potential difference
• Use the equation: charge © = current (A) × time (s)
• Use and recognise the equation for mean drift velocity
• Use the equation: energy transferred (work done) (J) = charge © × potential difference (V)
• Use the equation: energy transferred (J, kWh) = power (W, kW) × time (s, h)
• Use the equation: power (W) = energy (J) ÷ time (s)