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:
The source of magnetic field is: (1) isolated magnetic pole (2) current loop (3) static electric charge (4) micrometerA) 1 and 2 are correct
B) 2 and 3 are correct
C) 1 and 4 are correct
D) 1, 2 and 3 are correct
Correct Answer: A
Solution :
Magnetic field is associated with an isolated magnetic pole and also with a current loop.
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