P5

Marking Scheme: Electricity Quiz This is the marking scheme for quiz: P5 - Electricity Quiz Topic guide: P5 - Electricity Section A: Multiple Choice c) Electrons (1) a) $1.6 \times 10^{-19}\text{ C}$ (1) b) Positive to negative (1) d) Increasing the length (1) c) Current (1) b) Positive terminal to negative terminal (1) Section B: Short Answer Charging by Friction (3 marks) Rubbing two materials (e.g., balloon and hair) causes electron transfer (1). One material loses electrons and becomes positive; the other gains electrons and becomes negative (1). Example: Electrons move from hair to balloon (or vice versa), creating a static charge (1). Conduction vs Induction (4 marks) ...

Physics Quiz: Electricity Time allowed: 45 minutes Total marks: 30 Section A: Multiple Choice Which particle is the primary carrier of negative charge in metals? a) Protons b) Neutrons c) Electrons d) Ions What is the value of the elementary charge (e)? a) $1.6 \times 10^{-19}\text{ C}$ b) $1.6 \times 10^{19}\text{ C}$ c) $6.25 \times 10^{-18}\text{ C}$ d) $1.0 \times 10^{-19}\text{ C}$ In an electric field, field lines are drawn from: a) Negative to positive b) Positive to negative c) Center to periphery d) North to south Which of the following increases the resistance of a wire? a) Increasing the cross-sectional area b) Decreasing the length c) Decreasing the temperature d) Increasing the length The rate of flow of electric charge is called: a) Voltage b) Resistance c) Current d) Power Conventional current flows in which direction? a) Negative terminal to positive terminal b) Positive terminal to negative terminal c) From higher resistance to lower resistance d) Randomly in all directions Section B: Short Answer Answer the following questions in the space provided. Marks are indicated in brackets. ...