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]

What happens to the deflection when we add salt to an electrolyte? Watch this visual demonstration to answer this question.

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]

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?

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]

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]