Electrical Resistance Explained | GCSE Physics Questions
Resistance is a measure of how much a component opposes the flow of electric current.
What happens to current if resistance increases?
What is Electrical Resistance Explained | Questions?
"The opposition that a substance offers to the flow of electric current."
What is the unit of electrical resistance?
A conductor has a potential difference of 10V and a current of 2A. What is its resistance?
How does the resistance of an LDR change as light intensity increases?
Resistance Essentials
Resistance is measured in Ohms (Ω).
Potential difference = current x resistance (V=IR).
Longer wires and higher temperatures increase resistance.
Common Error: Thinking resistance is the same as friction. While similar in effect, keep the formal definition for exams.
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