Edexcel IGCSE·Science·IGCSE Science (Double Award)

Energy & Electricity

13 min read

Energy stores, work and power, efficiency, and electric circuits.

Energy

Energy is conserved. $E_k=\frac{1}{2}mv^2$ , $E_p=mgh$ , $W=Fd$ . Power = energy ÷ time; efficiency = useful output ÷ total input × 100%.

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Edexcel IGCSE·Science·IGCSE Science (Double Award)

13 min read

Energy stores, work and power, efficiency, and electric circuits.

Energy is conserved. $E_k=\frac{1}{2}mv^2$ , $E_p=mgh$ , $W=Fd$ . Power = energy ÷ time; efficiency = useful output ÷ total input × 100%.

Create a free account to read this note in full. Every free account gets 2 complete revision notes — no card needed.