The horizontal component of earth’s magnetic field at a certain place is 3.0 × 10 -5 T and having a direction from the geographic south to geographic north. The force per unit length on a very long straight conductor carrying a steady current of 1.2 A in east to west direction is
Text Solution
Verified by ExpertsThe correct answer is:
C
Force per unit length 
When the current is flowing from east to west then 
, hence
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