Resistance
Resistance is the opposition offered by a conductor to the flow of electric current.
Practice This ConceptMain explanation
Teacher explanation
A conductor with higher resistance allows current to flow less easily. Resistance depends on the length, thickness, material, and temperature of the conductor. It is measured in ohm.
Example
A long, thin nichrome wire has more resistance than a short, thick copper wire of the same size.
Simple analogy
Resistance means resists current.
Common confusion
Students often think resistance is the amount of current, not the opposition to current.
Exam tip
Remember: longer wire means more resistance, and thicker wire means less resistance.
Answer writing and exam use
1-mark use
Write the exact meaning of resistance in one clean line.
2-mark use
Define resistance and add one example or condition.
3-mark use
Explain resistance, show the method or example, and mention the common mistake.
Practice this concept with focused MCQs
Open the concept quiz intro first, review the test details, and then start a focused MCQ set from this concept only. Instant score and answer review are live now.
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