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    				| 1. | State the physical quantity which is equal to the ratio of potential difference and curre.,t. Define its SI unit. | 
| Answer» Solution :Electrical RESISTANCE, R `=(V)/(I)` The resistance of a CONDUCTOR is said to be one ohm if the potential di.fference applied across its ends is I volt and a CURRENT of 1 A flows through it. Its SI UNIT is ohm `(Omega)` `1 ohm=(1 "volt")/(1 "ampere")` | |