Please solve q 10?

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1 Answer
Narad T.
Mar 30, 2018

The answer is option #C#

Explanation:

When resistances are connected in series, the same current will pass through each of them.

#P=UI#

#P_1=U_1I#

#P_2=U_2I#

#P_1=40W#, #=>#, #U_1=40/I#

#P_2=100W#, #=>#, #U_2=100/I#

Therefore,

As the current is the same,

#U_2>U_1#

The answer is option #C#

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