what’s the difference between current and voltage
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Water and Electricity work very much the same way.
Amount of Charge = Amount of Water
Voltage is a difference in charge. So you got 2 water tanks, more water in one than the other.
The bigger the difference in the amount of water between the tanks, the bigger the voltage.
When you connect the 2 tanks, water flows from the higher tank to the lower tank, like when you connect 2 voltages, charge moves from the higher voltage to the lower voltage.
The amount of flow from one tank to the other is the current.
The current is controlled by the difference in the tanks AND the size of the pipe which connects them. The size of the pipe is like resistance in electricity. A large pipe is a low resistance, a small pipe a large resistance.
SO, you connect the 2 tanks. If you use a small pipe, since it has high resistance, the current (water flow) will be low. If you use a large pipe, since it has low resistance, the current (water flow) will be high.
This relationship is described with this EMF equation.
V=IR Voltage equals the Current times the Resistance or an alternative way to see it
I=V/R Current is the voltage divided by the resistance. With this format, you can see if the Resistance (pipe size) goes up, the current I, comes down.
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