GCE O-level Physics Demanding Learn-by-Example (Yellowreef)

GCE O-level Physics Demanding Learn-by-Example (Yellowreef)

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a€c completely covers all question-types since 2003 a€c exposes all a€œtricka€ questions a€c provides step-by-step solutions a€c refreshing reverse-engineering approach to learning a€c most efficient method of learning, hence saves time a€c examples arrange from easy-to-hard to facilitate easy absorption a€c advanced trade book a€c complete edition and concise edition eBooks availableExample 5 Explain how a€œthermistora€ and a€œlight-dependent resistora€ are used in an electronic circuit. Solution: When the surrounding ... 7 Buzzer The diagram above shows a light-sensitive alarm which uses a lightdependent resistor (LDR), a reed relay and a buzzer. Describe how this circuit works. LDR Reed relay Solution:anbsp;...

Title:GCE O-level Physics Demanding Learn-by-Example (Yellowreef)
Author:Thomas Bond, Chris Hughes
Publisher:Yellowreef Limited - 2013-11-22


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