In a photoelectric experiment, if the stopping potential is increased, what happens to the current?
Correct Answer: Current decreases
- Step 1: Understand what stopping potential means. It is the voltage needed to stop the flow of electrons from the photoelectric effect.
- Step 2: Know that in a photoelectric experiment, light hits a material and causes electrons to be emitted.
- Step 3: Realize that these emitted electrons move towards the anode (positive side) to create current.
- Step 4: When the stopping potential is increased, it means we are applying a stronger voltage to stop the electrons.
- Step 5: As the stopping potential increases, more electrons are stopped from reaching the anode.
- Step 6: Since fewer electrons reach the anode, the current (which is the flow of electrons) decreases.
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