To operate successfully, a laser diode requires 2.3 V while drawing a current of 25 mA.
For the circuit shown, calculate the required resistor value
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ENGINEERING, PPT 2019 HSC 23b
An electric scooter is powered by a 12 volt rechargeable battery with a capacity of 18 Ah.
Calculate the energy stored in the battery. Use 1 Wh = 3600 J. (2 marks)
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ENGINEERING, PPT 2022 HSC 16 MC
The diagram shows a circuit. The diode causes a voltage drop of 0.7 volts.
What is the current flowing in this circuit?
- 0.35 A
- 0.38 A
- 0.40 A
- 0.51 A
ENGINEERING, PPT 2021 HSC 22c
An electric skateboard battery is rated at 0.078 watts at an operating voltage of 48 volts.
Calculate the capacity of the battery in amp hours, if it fully discharges in one hour of use. The power (
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ENGINEERING, PPT 2021 HSC 18 MC
The diagram shows a simplified circuit of an electric scooter.
What would be the reading of the ammeter in this circuit?
- 3.0 A
- 6.0 A
- 12.0 A
- 26.9 A