A) When the wire is connected to the battery directly
B) When the wire is divided in two equal parts and both the parts are connected to the battery in parallel.
C) When the wire is divided in four equal parts and all four parts are connected to the battery in parallel.
D) When only half the wire is connected to the battery
Correct Answer: C
Solution :
The voltage in each option is equal to the batter no voltage, \[i.e.,\] same for all the options. Now, maximum heat will be generated in the case in which resistance is minimum. The equivalent resistance of each option is as below: [a]\[R\] [b]\[\frac{R}{{{2}^{2}}}\] [c]\[\frac{R}{{{4}^{2}}}\] [d]\[\frac{R}{2}\]
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