32 questions in Electricity and circuits at Form 5 · BGCSE
Most triedMost missedNewest- 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?
- The diagram shows a thermistor and a lamp connected in a circuit. When the thermistor is cooled, the lamp becomes dimmer. Which statement explains wh…
- One end of a plastic rod is rubbed with a cloth. When the end of the rod is brought near some small pieces of paper it picks them up. Which row expla…
- The diagram shows an electric circuit. The switch S is closed. What is the current supplied by the battery?
- Which instrument is used to measure both voltages and time intervals?
- The diagram shows electric circuits 1 and 2. Which row is correct about the effective resistance of circuit 1 and 2?
- Which symbol is for a fuse?
- An electric kettle is connected to a 240 V mains supply. The resistance of the element of the kettle is 48 Ω. The kettle operates normally. Which row…
- An alternating voltage is supplied across the Y-plates of a cathode ray oscilloscope (c.r.o.) with the time base on. Which diagram shows the display …
- A 1.2 kW heater is operated from a 240 V power supply. Which fuse is suitable for use to protect the heater?
- The diagram shows a positively charged electroscope. A charged rod is brought near the metal cap of the electroscope. Which diagram shows the charge …
- The diagram shows an electric circuit with identical resistors. Which voltmeter will show the highest reading?
- Which action will ensure safety when using electricity?
- Which characteristics are correct for power during transmission and at households?
- The diagram shows a display of a waveform on the cathode ray oscilloscope. The time base is set at 50 ms/div. What is the frequency of the wave?
- The diagram shows a potential divider. The resistance of R₁ is twice the resistance of R₂. Which statement is correct?
- 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 beco…
- A filament bulb is labelled 240 V, 60 W. What is the resistance of the bulb?
- The diagram shows a connection of the three pin plug of an appliance. Which wires carry electric current when the appliance is operating normally?
- The circuit diagram shows an arrangement of resistors. P, Q, R and S represent the current at the points shown. Which statement is correct?
- Which particles flow in an electrical conductor to give current?
- The diagram shows a metal sphere supported by an insulator. Some of the steps done to charge the sphere by induction are listed: 1. a positively char…
- Which symbol is for a fuse?
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