Question

In an overhead straightwire, the current is north. The magnetic field due to this current,at our point of observation, is a) north b) south c) west d) east

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asked 2021-02-12
In an overhead straightwire, the current is north. The magnetic field due to this current,at our point of observation, is
a) north
b) south
c) west
d) east

Expert Answers (1)

2021-02-13
Maybe this will help.
The magnetic field direction follows the "right handrule". So, if you grip the wire with your right hand so thatwhen you close your 4 fingers around it, your thumb points in thedirection of the current. Then the direction ofthe magnetic field is the same as your closing fingers. That is, it is circular around the wire. Hope this helps.
Regards, Frank
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