E&M D4: Resistance and Ohm's Law

FQ:  How does Ohm's law relate current to voltage and resistance? 

1.  Read:  Resistance

2.   Ohm's Law Simulation    (If absent, watch this video)

When an electrical potential exists in a circuit, a current may flow.  Current is the flow of electrons in a circuit.  Resistance in the circuit slows the flow of the electrons, reducing the current in the circuit. 

In this formula: 

V is Voltage, measured in Volts (V).

I is Current, measured in Amperes (A). 

R is Resistance, measured in Ohms (Ω). 

3.  Lab:  Ohm's Law 

Open the Circuit Construction Kit. 

Choose "Lab" 

Practice

Click "take the quiz" to get started!