Directions : In the following question more than one of the answers given may be correct. Select the correct answer and mark it according to the code:
A steel wire has a resistance twice that of an aluminium wire. Both of them are connected with a constant voltage supply. More that will be dissipated in (1) steel wire when both are connected in parallel (2) steel wire when both are connected in series (3) aluminium wire when both are connected in series (4) aluminium wire when both are connected in parallelA) 1, 2 and 3 are correct.
B) 1 and 2 are correct.
C) 2 and 4 are correct.
D) 1 and 3 are correct.
Correct Answer: C
Solution :
\[{{R}_{steel}}=2{{R}_{Al}}\] In series \[H\propto R\] (\[i\]is same) So, H will be more in steel wire In parallel \[H\propto \frac{1}{R}\] (V is some) So, H will be more in aluminium wire.
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