A focused three-component revision and exam practice pack for SP10c, covering the complete Edexcel Separate Science Physics specification for the charge equation, the energy equation and the definition of the volt (P10.5, P10.6, P10.8, P10.9).

Topic Mastery Sheet covers the equation Q = I × t with a worked example requiring conversion of milliamps and minutes; the equation E = Q × V with a worked example; a conceptual explanation of why 1 V = 1 J/C (derived from E = QV by rearrangement) that mirrors the justification question in the Higher exam; the derivation of the combined equation E = IVt by substitution; and a detailed worked example of the 480 mA / 2 minutes charge calculation that appears verbatim in the Higher mark scheme, with both unit conversions explicitly shown.

Student Exam Practice Sheet includes a two-part teacher-statement justification question on the meaning of the volt; the 480 mA / 2.0 minute charge calculation requiring both unit conversions; and a three-part torch question (p.d. per cell MCQ, energy per second MCQ, reason for fading) using data from the standard exam. Question format matches the Edexcel test style.

Teacher Answer Key provides a complete mark scheme specifying that both unit conversions (mA to A, minutes to seconds) must be shown for the first mark in the charge calculation, and that “cells are running out” is not accepted without reference to energy, voltage or current for the fading question.

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