Question

The potential difference across a conductor is v = (6.0 + 0.5) and the current
I=(1.2 +0.2)A. The resistance of the conductor is
a) (5.0407) b) (5.012) c) (5.0+0.3)2 d) (5.0+1.0)​

Answer 1

Answer:

b) (5.012)

Explanation:

According to the question,

The potential difference across a conductor is v = (6.0 + 0.5)

and the current I=(1.2 +0.2)A.

The resistance of the conductor is

$R=\frac{V}{I}=\frac{6}{1.2} = 5\Omega\\\\\frac{\Delta R}{R}X100= \frac{\Delta V}{V}X100 = \frac{\Delta I}{I}X100\\\\\frac{\Delta R}{R}X100= \frac{0.5}{6}X100 +\frac{0.2}{1.2}X100= 0.0125\Omega\\\\\frac{\Delta R}{R} = 0.0125\Omega\\\\R= (5 + 0.12)$