A current through a horizontal power line flows from south to North direction. The direction of magnetic field line 0.5m above it isA North B South C West D East
Question
A current through a horizontal power line flows from south to North direction. The direction of magnetic field line 0.5m above it isA North B South C West D East
Solution
The direction of the magnetic field can be determined using the right-hand rule. According to this rule, if you point your right thumb in the direction of the current (which is from south to north in this case), your fingers will curl in the direction of the magnetic field.
So, if you point your right thumb towards the north (the direction of the current), your fingers will curl from west to east above the wire. Therefore, the direction of the magnetic field 0.5m above the wire is from west to east.
So, the answer is C. West.
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