Consider the following statements: A. Magnetic field produced by current flowing through a strai...

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Consider the following statements:
A. Magnetic field produced by current flowing through a straight wire has no poles

B. The magnetic lines of force produced by a straight current carrying conductor are straight in nature.

C. To produce a strong magnetic field at its centre, we prefer a current carrying wire loop of larger radius.
Which of the statement(s) is/are correct?
a. (B) and (C)
b. (B) only
c. (A) only
d. All are correct
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