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--- the_photoelectric_effect [2021/02/01 19:55] – admin
+++ the_photoelectric_effect [2022/09/01 20:11] (current) – [In Class Activity] admin
@@ Line 37: / Line 37: @@
 {{ :photoelectric.png?direct&600 |}}
-{{:question-mark.png?direct&50|}}====== In Class Activity ======
+{{:question-mark.png?direct&50|}}
+====== In Class Activity ======
-  - We can measure the photoelectric effect by setting up two metal plates with a variable potential difference $V$ between them.  If we shine light of frequency $\nu$ on the positive plate there will be a current between the plates due to electron ejected from the positive plate with nonzero kinetic energy, provided $V$ is not too large.  Derive an expression for the //**stopping potential**// $V_s$ at which there ceases to be a current in terms of $h$, $e$, $\nu$, and $W$.
+  - We can measure the photoelectric effect by setting up two metal plates with a variable potential difference $V$ between them.  If we shine light of frequency $\nu$ on the positive plate there will be a current between the plates due to the motion of the electron ejected from the positive plate with nonzero kinetic energy, provided $V$ is not too large.  Derive an expression for the //**stopping potential**// $V_s$ at which there ceases to be a current in terms of $h$, $e$, $\nu$, and $W$.
 {{ :stoppingpotential.png?direct&400 |}}