A polythene rod is rubbed with a dry woollen cloth. The polythene rod becomes negatively charged.
Which statement explains how this happens?
Negative charges move from the woollen cloth to the polythene rod.
Negative charges move from the polythene rod to the woollen cloth.
Positive charges move from the woollen cloth to the polythene rod.
Positive charges move from the polythene rod to the woollen cloth.
452 exam-style questions on CIE IGCSE Physics 4.2 Electrical quantities, covering 4.2.1a Positive and negative charge, 4.2.1b Charging by friction and detecting charge, 4.2.1c Electrical conductors and insulators, 4.2.1d Electric fields and electric field patterns, 4.2.2a Electric current, charge and measuring current, 4.2.2b Conduction in metals and the direction of current, 4.2.2c Direct current and alternating current, 4.2.3a Electromotive force, 4.2.3b Potential difference and voltmeters, 4.2.4a Resistance, 4.2.4b Resistance of a metallic wire, 4.2.4c Current–voltage graphs, and 4.2.5 Electrical energy and electrical power. Each one has a worked solution and a mark scheme showing where the marks go.