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1.Units, Dimensions and Measurement
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અવરોધ $R = \frac{V}{i} $ છે,જયાં $V= 100 \pm 5 V$ અને $ i = 10 \pm 0.2 \,amp$ હોય, તો $R$ માં પ્રતિશત ત્રુટિ ......... $\%$ થશે.
A
$5$
B
$7$
C
$5.2$
D
$ \frac{5}{2}$
Solution
(b) $\therefore {\left( {\frac{{\Delta R}}{R} \times 100} \right)_{\max }} = \frac{{\Delta V}}{V} \times 100 + \frac{{\Delta I}}{I} \times 100$
$ = \frac{5}{{100}} \times 100 + \frac{{0.2}}{{10}} \times 100$
$ = (5 + 2)\% $
$= 7\%$
Standard 11
Physics
