Question

The value of resistance is 10.845 $\Omega$ and the current is 3.23 A. On multiplying, we get the potential difference is 35.02935 V. The value of potential difference in terms of significant figures would be:

• A. 35 V
• B. 35.0 V
• C. 35.029 V
• D. 35.03 V

Answer 1

Answer: (B)

35.0 V

The value of resistance $=10.84\Omega$

current is $=3.23A\left(I\right)$

difference $=35.2935V$

The value of potential difference in terms of significant figure could be - $35.02935<5$ proceeding figure

$\approx 35.0V$

$1.$ If it is less than $5$, drop it and all the figures to the right of it.

$2.$ If it is more than $5$, increased by $1$ the number to be rounded, that is the proceeding figure.

Hence, $2$ is less than $5$, then the proceeding figure is same.