Start Free Mock LoginAlready registered? Login here

Physics - Magnetism Question with Solution | TestHub

PhysicsMagnetismMagnetic Dipole & MomentEasy2 minPYQ_2020

PhysicsEasysingle choice

A circular coil of radius $4 c m$ having $50$ turns carries a current of $2 A$ . It is placed in a uniform magnetic field of the intensity of $0.1 W e b e r m^{- 2}$ . The work done to rotate the coil from the equilibrium position by $180 °$ is

Options:

Answer:

Solution:

$R = 4 c m$

$N = 50$

$I = 2 A$

$B = 0.1$

$W = N I A B (\cos θ - \cos 180 °)$

$W = 50 \times 2 \times π {(4 \times 1 0^{- 2})}^{2} \times 0.1 \times (1 - (- 1))$

$W = 100 \times π \times 16 \times 1 0^{- 4} \times \frac{1}{2} \times 2$

$W = 32 π \times 1 0^{- 3}$

$W = 0.1 J$

Stream:NTA_ABHYAS_NEETSubject:PhysicsTopic:MagnetismSubtopic:Magnetic Dipole & Moment

⏱ 2mℹ️ Source: PYQ_2020

Doubts & Discussion

Loading discussions...