Physics - Electricity - Circuits - Resistance and Ohm's law - Ohm's Law

A 5-step lesson. Step 1: 'Resistance (R) is how much a component opposes the flow of current. Units: Ohms (Ω). Higher resistance → less current for same voltage. Caused by electrons colliding with atoms in the conductor.' Step 2: 'Ohm's Law: V = IR. Voltage (V) = Current (A) × Resistance (Ω). Rearra