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State the physical quantity which is equal to the ratio of potential difference and current. Define its SI unit. |
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Answer» Electrical resistance, R=V/I The resistance of a conductor is said to be one ohm if the potential difference applied across its ends is 1 volt and a current, of 1 A flows through it. It SI unit is ohm (Ω) 1 Ohm= 1 volt/1 ampere. |
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