alleryThe negative voltage that just stops the current is called the:
ASteady potentials
BStopping potential
CStarting potential
DStandard potential
Answer & Solution
Correct answer: B. Stopping potential
1. A retarding voltage turns the fastest electrons back.
2. At one particular value the current reaches zero.
3. That value is the stopping potential.
4. So the answer is stopping potential.
_Source: syllabus Physics, Ch 11 'Dual Nature of Radiation and Matter'_
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