define resistance of a conductor and state its si unit and dimensions
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Resistance is defined as the property of a conductor to resist the flow of charges through it. The resistance of conductor is numerically given as the ratio of potential difference across its length to the current flowing through it.
The resistance of a conductor is said to be 1 ohm when potential difference between the two ends of the conductor is 1 V and current flowing through it is 1 Amp. Or, when the magnitude of current and potential is same. As, R = 1 ohm will occur in ohms law when; V = IR
Dimensions: M1 L2 T-3 I-2.
Explanation:
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