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dimensional formula for resistence
Asked by mages032006 | 26 Jun, 2023, 18:37: PM
Expert Answer
Electrical power = ( current )2 × Resistance
Resistance = Power / ( current )2 ........................(1)
Power = Work / Time = ( force * distance ) / Time ....................(2)
Let [ x ] be dimension of quantity x
dimensions of force = [ force ] = M L T -2
Using eqn.(2) , dimensions of power = [ Power ] = ( M L T -2 × L ) / T = M L2 T -3
Using eqn.(1), dimensions of resistance = [ Resistance ] = M L2 T -3 A-2
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