An electric heater is rated at 1500 watts1500\text{ watts}1500 watts.
Which statement correctly describes the meaning of this value?
1500 joules1500\text{ joules}1500 joules of energy are transferred every second.
1500 coulombs1500\text{ coulombs}1500 coulombs of charge are transferred every second.
1500 volts1500\text{ volts}1500 volts of potential difference are transferred every second.
1500 ohms1500\text{ ohms}1500 ohms of resistance are transferred every second.
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.