A) \[{{P}_{1}}={{P}_{2}}\]
B) \[{{P}_{1}}>{{P}_{2}}\]
C) \[{{P}_{1}}<{{P}_{2}}\]
D) \[{{P}_{1}}\]and\[{{P}_{2}}\]are undefined
Correct Answer: B
Solution :
\[{{P}_{1}}=\frac{{{W}_{1}}}{{{t}_{1}}}=\frac{500}{10\times 60}=\frac{5}{6}watt=0.83\,\,watt\] \[{{P}_{2}}=\frac{{{W}_{2}}}{{{t}_{2}}}=\frac{600}{20\times 60}=\frac{1}{2}watt=0.5\,\,watt\] Hence,\[{{P}_{1}}>{{P}_{2}}\]You need to login to perform this action.
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