30-page study workbook for Pearson Edexcel IGCSE Double Science Physics (4SD0, Paper 1P), covering all of Theme 2: Electricity across 6 structured 30-minute sessions. Includes a 14-symbol circuit symbols reference table, six 4-step worked examples with verification, kWh and cost calculations with a worked example, three complete practical investigations (I-V characteristics, series/parallel circuits, resistance vs wire length) with variables tables, sources of error, and improvements, a potential divider subsection with formula and LDR/thermistor applications, and 10 Common Error panels. An Answer Key covers all 26 practice questions with method-level verification.