A) 1 A
B) 2 A
C) 4 A
D) 12 A
Correct Answer: A
Solution :
(a) 1 A Given that \[{{P}_{4}}=4\,W\] \[{{P}_{4}}=l_{4}^{2}{{R}_{4}}\] Or \[{{P}_{4}}={{l}^{2}}{{R}_{4}}\] \[(\because {{l}_{4}}=l)\] Or \[l=1A\]
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