The voltage across a wire is `(100pm5)V` and the current passing through it is `(10pm0.2)` A. Find the resistance of the wire.

Explanation

Voltage V = `(100pm5)` V
Current I = `(10pm0.2)A`
Rasistance R = ?
Then resistance R is given by Ohm.s law,
R `= V/I = (100)/(10) = 10 Omega`
`(DeltaR)/(R) = ((DeltaV)/(V) + (DeltaI)/(I))`
`DeltaR = ((DeltaV)/(V) + (DeltaI)/(I))R = ((5)/(100) +(0.2)/(10))10`
= (0.05 + 0.02)10 = 0.07 `xx` 10 = 0.7
The resistance `R =(10pm0.7)Omega`