A) 4 unit
B) 1.7 unit
C) 4.2 unit
D) 5 unit
Correct Answer: C
Solution :
We have \[{{v}_{rms}}=\sqrt{\frac{v_{1}^{2}+v_{2}^{2}+.....+v_{n}^{2}}{n}}\] \[=\sqrt{\frac{4+25+9+36+9+25}{6}}\] \[=\sqrt{\frac{108}{6}}=\sqrt{18}=3\sqrt{2}\] \[=3\times 1.414=4.242\,\text{unit}\]
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