The strength of the magnetic field at a point r near a long straight current-carrying wire is B . The field at a distance r 2 will be

Question

The strength of the magnetic field at a point r near a long straight current-carrying wire is B . The field at a distance r 2 will be, B 2, B 4, 2 B, 4 B

MARKS App · Accepted Answer

B ∝ 1 r ⇒ B 1 B 2 = r 2 r 1 ⇒ B B 2 = r 2 r ⇒ B 2 = 2 B

Search any question & find its solution

Looking for more such questions to practice?