A coil carrying current l has radius r and number of turns n it is rewound so that radius of new coil is r/4 and it carries current l the ratio of magnetic moment of new coil to that of original coil is

Question:

Options :

(a)1
(b)1/2
(c)1/4
(d)1/8

Answer :

Ans :- (c)1/4

Answer Steps :

Step 1:-

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Related Questions

The kinetic energy of a particle executing a linear SHM is 16 J, when it is in the mean position. If the amplitude is 25 cm, periodic time of the particle in second is (Mass of the particle = 51.2 g)

A body of mass ‘M’ executes SHM Along x-axis with frequency ‘n’. At a distance x from the mean position, the body has kinetic energy ‘K’ and potential energy ‘P’. The amplitude of oscillation of the SHM is

The bob of a simple pendulum of ‘length ‘l’ is pulled through an angle ‘θ’ from its equilibrium position and them released. When it passes through its equilibrium position, its speed is given by: (g = acceleration due to gravity)

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