Which row correctly defines electric charge Q Q\,Q and states the direction of electron flow in an electrical circuit?
| Definition of charge QQQ | Direction of electron flow | |
|---|---|---|
| A | Q=It\displaystyle Q = \frac{I}{t}Q=tI | from negative terminal to positive terminal |
| B | Q=I×tQ = I \times tQ=I×t | from negative terminal to positive terminal |
| C | Q=I×tQ = I \times tQ=I×t | from positive terminal to negative terminal |
| D | Q=It\displaystyle Q = \frac{I}{t}Q=tI | from positive terminal to negative terminal |
Row A
Row B
Row C
Row D
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.