Resistance Flashcards

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What is resistance?

Resistance is the measure of opposition to the flow of current, indicating how difficult it is for a current to flow through a component. It is measured in ohms (Ω).

What is an insulator?

An insulator is a material with high resistance, making it difficult for current to flow through. For example, plastic.

What is a conductor?

A conductor is a material with low resistance, making it easy for current to flow through. Metals are good conductors.

How can you identify insulators and conductors using a circuit?

Place the material in a circuit; if the lamp lights up, it is a conductor. If the lamp does not light up, it is an insulator.

How do you calculate resistance?

Resistance (Ω) = Potential difference (V) ÷ Current (A)

Revision Notes
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