Which one of the following statements is correct? |
i. Magnetic field is a quantity that has both magnitude and direction. |
ii. The magnetic field inside a long straight solenoid carrying current is the same at all points. |
iii. The magnetic field lines inside a solenoid carrying current are concentric circles. |
iv. It was the Oersted who discovered the magnetic effect of current. |
v. If a soft iron rod is placed inside a current carrying solenoid, the strength of magnetic field becomes zero. |
A) i and iii
B) i, iii and iv
C) i, ii and iv
D) i, iii, iv and v
E) None of these
Correct Answer: C
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