Physics · BGCSE / Electricity and circuits
Multiple choicePast exam questionForm 5 · BGCSE
The diagram shows a circuit used to operate a lamp. Which row is correct about the resistance of the LDR and current in the relay switch when it becomes dark?
Source: BEC BGCSE Physics 2023, Paper 1, Question 37
Report a problem
More like this
- What is the combined resistance of a 6 Ω and a 3 Ω resistor in parallel?
- Electrical power P = …
- A 2 kW kettle is used for 30 minutes. How much energy does it use?
- Which wire in a three-pin plug is green and yellow?
- What does a fuse do?
- A household uses a 1.5 kW electric stove for 2 hours and five 60 W bulbs for 5 hours every day. Electricity costs P1.20 per kWh.
- An electric charge of 60 C passes through an electric component of resistance 20 Ω in 30 seconds. What is the potential difference across the compone…
- Which component is used to store electric charge?