A solar cell generates a potential difference of 0.10 V when a 500ohm resistor is connected across it, and a potential difference of 0.15 V when a 1000 ohm resistor is substituted.What are the (a) internal resistance and (b) emf of the solar cell? (c) The area of the cell is 5.0 cm2, and the rate per unit area at which it receives energy from light is 2.0 mW/cm2.What is the efficiency of the cell for converting light energy to thermal energy in the 1000 ohm external resistor?
Ohm's law
Ohm’s law is a prominent concept in physics and electronics. It gives the relation between the current and the voltage. It is used to analyze and construct electrical circuits. Ohm's law states that the voltage across a conductor is directly proportional to the current flowing through it.
Path of Least Resistance
In a series of alternate pathways, the direction of least resistance is the actual or metaphorical route that offers the least resistance to forwarding motion by a given individual or body.
A solar cell generates a potential difference of 0.10 V when
a 500ohm resistor is connected across it, and a potential difference of
0.15 V when a 1000 ohm resistor is substituted.What are the (a) internal
resistance and (b) emf of the solar cell? (c) The area of the cell is
5.0 cm2, and the rate per unit area at which it receives energy from
light is 2.0 mW/cm2.What is the efficiency of the cell for converting
light energy to thermal energy in the 1000 ohm external resistor?
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