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Physics OCR Gateway GCSE > P2 > Flashcards

P2 Flashcards

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0
Q

What current do photocell create?

A

Direct current (DC)

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1
Q

What is direct current?

A

The current flows the same way around thee circuit.

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2
Q

What are photocells made of and why?

A

They a made of silicon- semiconductor
The silicon atoms absorb the photo energy knocking loose some electrons
The electrons then flow around the circuit.

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3
Q

What factors determine the current and power output of a photocell?

A 
Surface area (gets more sunlight)
Intensity of the light (produces more elec)
Distance from source (closer it is then more intense the light)
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4
Q

What are the advantages and disadvantages of photocells?

A

Advantages

No moving parts

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Physics OCR Gateway GCSE (6 decks)

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