An interactive design and technology test to be used in alongside Qwizdom's Classroom Response Systems/Student Voting Systems

1. GCSE Design & Technology Materials & Components A Qwizdom Presentation

2. What does an electrical conductor do? An electrical conductor allows electricity to flow through it easily. An electrical conductor prevents electricity from flowing. An electrical conductor is a type of plastic material. All of the above

3. What is a material that can exhibit both insulating and conducting properties? Conductor Insulator Semi-conductor Demi-conductor

4. An insulator has what sort of value? A high resistivity value A high conductance value A high material value All of the above

5. When light falls on an LDR, its resistance will: Increase Double Stay the same Decrease Halve

6. A thermistor is a component that changes its resistance in response to a change in: Light Temperature Pressure Current Moisture

7. Two transistors can be joined together to form a: Darlington pair Durham pair Doncaster pair Dundee pair

8. A miniature circuit that is etched onto a piece of silicon is called A transistor A semiconductor A discreet component A dual-in-line package An integrated circuit

9. What is the unit of resistance? Ohms Volt Farad

10. What is the resistance of a resistor designated as 3k3? 33 kilo-ohms 0.33 kilo-ohms 3.3 kilo-ohms

11. In a resistor colour-code, what resistance value is indicated by brown, black, orange? 100000 ohms 1000 ohms 10000 ohms

12. An electrolytic capacitor can be connected either way round in a circuit: True False

13. Which of the following is NOT a lead connected to a transistor Base Emitter Follower Collector

14. Capacitors are components that store electrical charge. Capacitance is measured in: Farads Ohms Joules

15. What is a potential divider? A potential divider is made up of two capacitors in parallel. A potential divider is made up of two capacitors in series. A potential divider is made up of a resistor and capacitor A potential divider is made up of two resistors in parallel. A potential divider is made up of two resistors in series.

16. Diodes are often used for changing alternating current into direct current - a process known as rectification. True False