Start Free Mock LoginAlready registered? Login here

Physics - Current Electricity Question with Solution | TestHub

PhysicsCurrent ElectricityMicroscopicHard2 minPYQ_2010

PhysicsHardsingle choice

A straight wire carrying current $i$ is turned into a circular loop. If the magnitude of magnetic moment associated with it in MKS unit is $M$ , the length of wire will be

Options:

Answer:

Solution:

Here, length $l = 2 π r$ or $r = \frac{1}{2 π}$ Area of circular loop $A = π r^{2}$ Magnetic moment $M = i A = iπ r^{2}$ $M = iπ \times \frac{l ^{2}}{4 π ^{2}} ∴ l = \frac{4 π M}{i}$

Stream:VITEEESubject:PhysicsTopic:Current ElectricitySubtopic:Microscopic

⏱ 2mℹ️ Source: PYQ_2010

Doubts & Discussion

Loading discussions...