Question

Assertion (A) and Reason (R).
Answer these questions selecting the appropriate option given below:-
a)
Both A and Rare true and Ris the correct explanation of A..
b) Both A and Rare true but Ris not the correct explanation of A.
c) A is true but Ris false.
d) Ais false and Ris true.
Q.01. Assertion (A): - On changing the direction of flow of current through a straight conductor,
the direction of a magnetic field around the conductor is reversed.
Reason (R): - The direction of magnetic field around a conductor can be given in
accordance with left hand thumb rule.​

Answer 1

C) A is true but R is false.

Reason:

On changing the direction of flow of current through a straight conductor, the direction of a magnetic field around the conductor is reversed.

This is due to Fleming's Right Hand Thumb Rule, which states that the direction of magnetic field is perpendicular and moves clockwise to the current carrying conductor.

So, the direction of magnetic field around a conductor can be given in accordance with Fleming's Right Hand Thumb Rule.