(a) In the following diagram 'S' is a semiconductor . Would you increase or decrease the value of R to keep the reading of the ammeter A constant when S is heated ? Given reason for you answer . (b) Draw the circuit diagram of photodiode and explain its working . Draw its I-V characteristics.

(a) In the following diagram 'S' is a semiconductor . Would you increa

1.	(a) In the following diagram 'S' is a semiconductor . Would you increase or decrease the value of R to keep the reading of the ammeter A constant when S is heated ? Given reason for you answer . (b) Draw the circuit diagram of photodiode and explain its working . Draw its I-V characteristics.
Answer» SOLUTION :On heating S, resistance of SEMICONDUCTORS S is decreased so to COMPENSATE the value of resistance in the circuit R is increased.

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(a) In the following diagram 'S' is a semiconductor . Would you increase or decrease the value of R to keep the reading of the ammeter A constant when S is heated ? Given reason for you answer . (b) Draw the circuit diagram of photodiode and explain its working . Draw its I-V characteristics.

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