Khan Academy
Khan Academy: Electrode (Distance Test)
Does the distance between the copper and zinc electrodes matter? What happens to the deflection when we hold them close vs. far apart? Watch this visual demonstration to answer these questions. [1:05]
Khan Academy
Khan Academy: Electrolyte (Strong Acid Test)
This visual demonstration shows an experiment with a strong acid as an electrolyte and observing the change in deflection compared to weak acid (vinegar). [0:43]
Khan Academy
Khan Academy: Electrolyte (Temperature Test)
Watch as we experiment with hot vs. cold vinegar as our electrolyte. Does the deflection in our galvanometer depend on temperature? [1:36]
Khan Academy
Khan Academy: Electrode (Surface Area Test)
What's the difference between one piece of metal and three pieces of metal in our cell. Does deflection change? Watch this visual demonstration to answer these questions. [1:07]
Khan Academy
Khan Academy: Electrolyte (Salt Test)
What happens to the deflection when we add salt to an electrolyte? Watch this visual demonstration to answer this question.
Khan Academy
Khan Academy: Variable Resistor (Pencil)
We use the inside of a pencil (graphite) to apply different 'lengths of pencil' to the circuit. What relationship do you observe between the length of graphite and deflection angle? Watch this video to find out! [1:27]
Khan Academy
Khan Academy: Inverse Square Law (Deflection Method)
An experiment to try to measure the change in the force of a magnet over a distance using the deflection of a compass. What is wrong with this approach?
Khan Academy
Khan Academy: Pencil Resistor
A pencil causes a change in the deflection, similar to the effect of adding an electromagnet. Why? Watch this video and find out! [1:04]
Khan Academy
Khan Academy: Series Load
Why does the deflection change when an electromagnet is attached to the circuit? Does it matter what side of the electromagnet we test? Watch this video to find out. [1:11]