A photon has a wave lenght of 501 nm calculate the energy
a photon has a wave lenght of 501 nm . calculate the energy of the photon in joules . enter your answer in scientific notation
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The energy of a photon is 9.61 x 10 ^ -20 J . What is its wavelenght( in nanometers)? Enter your answer in scientific notation
An LED is rated at VF = 1.6 Volts to 2.0 Volts at IF = 20 mA. What value of series resistance is needed to limit the LED current to 20 mA when this LED is connected to a 32 Volts peak source
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