Photoelectric Switch
A look at what is currently available on eBay
 EE-SX673 Diffuse Photo Micro Photoelectric Switch US $11.63 
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 AC90-250V 300mm Diffuse Reflection Photoelectric Switch US $17.82
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 Through Beam NPN NO DC6-36V Photoelectric Switch Sensor US $17.23
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 EE-SX671 L Type NPN Photo Micro Photoelectric Switch US $14.00
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 EE-SPY401 NPN Photo Micro Sensor Photoelectric Switch US $12.20
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 10 Pcs Switching Transducer Output Photoelectric Switch US $7.16
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 DC 6-36V 10cm Diffused Type Photoelectric Switch Sensor US $16.25
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 Through Beam PNP NO Infrared Ray Photoelectric Switch US $18.39
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 Pair E3JK-5DM2 Bijection Photoelectric Approach Switch US $21.05
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 Diffuse Reflection DC 5 Wire NC Photoelectric Switch US $14.04
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 InterMatic Photoelectric Timer/Switch. 1000W 60Hz 120V Tungsten US $10.00
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 EE-SX674 NPN Photo Micro Sensor Photoelectric Switch US $11.63
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 E3JK-5DM1(5L) Bijection Photoelectric Approach Switch US $20.87
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 30cm Infrared Ray Diffuse Type Photoelectric Switch US $11.22
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 New Honeywell CP18D1AAL2 Photoelectric Sensor Switch US $69.99
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Can someone help me with my science [10 points]?
If you are running a photoelectric effect experiment, and your light source cannot create an electric current, which adjustment might cause an electric current to flow?
A. Switch to a brighter light source.
B. Switch to a light source with a shorter wavelength.
C. Switch to a light source with a higher frequency.
D. Switch to a light source with a lower frequency.
E. Switch to a dimmer light source.
Please slecet all the true anwsers.
The photoelectric effect depends on the energy of a photon, which is proportional to both the frequency and the wavelength, since they are inversely proportional
c = f(lambda) where c = speed of light, f is frequencey, lambda is wavelength
E = hf where h is Planck's constant, and f is frequency
E = hc/(lambda) where h is Planck's constant, c is the speed of light and lambda is the wavelength
The intensity of the light won't affect whether there is current or no current.
Therefore, you can adjust the frequency or wavelength.
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August 3rd, 2009 in
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