19.1
"The current I through a conductor is defined as I = ΔQ/Δt. The SI unit for current is the ampere (A)."
"Ohm's law states that the current in a circuit is directly proportional to the voltage across the circuit and inversely proportional to the resistance of the circuit: I = V/R."
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"The current I through a conductor is defined as I = ΔQ/Δt. The SI unit for current is the ampere (A)."
"Ohm's law states that the current in a circuit is directly proportional to the voltage across the circuit and inversely proportional to the resistance of the circuit: I = V/R."
What you'll learn
- Define electric current and calculate it from charge flow over time using I = ΔQ/Δt
- State Ohm's Law and use V = IR to calculate voltage, current, or resistance
- Explain what electrical resistance is physically and identify factors that affect it
- Distinguish between ohmic and non-ohmic materials
- Interpret V-I graphs for ohmic and non-ohmic components
Prerequisites
Slides
Interactive presentations perfect for visual learners • Interactive presentation
Slide Video
Watch narrated slides play like a video lesson • Narrated slide playback
Task-sets
Learning resource • 1 task-sets