TS EAMCET · Physics · Magnetic Effects of Current
A bar magnet having magnetic moment \(M\) is bent as an arc. Its magnetic moment
- A decreases
- B increases
- C does not change
- D may increase or decrease
Answer & Solution
Correct Answer
(A) decreases
Step-by-step Solution
Detailed explanation
Magnetic moment of a bar magnet, \(\mathbf{M}=m(2 \mathbf{l})\) \(=\) pole strength \(\times\) distance between poles When bar magnet is bent as an arc distance between poles decreases whereas pole strength remains same. So, its magnetic moment also, decreases.
See the Complete Solution
Get step-by-step explanations for this and 2.5 Lakh+ more JEE, NEET & CET questions.
- Unlock all solutions
- Practice the full chapter
- Track accuracy across PYQs
4.8 rated on Google Play · 14,000+ reviews
More questions from Physics
- In an optical fibre, core and cladding were made with materials of refractive indices 1.5 and 1.414 respectively. To observe total internal reflection, what will be the range of incident angle with the axis of optical fibre?TS EAMCET 2010 Medium
- A particle of mass \(\mathrm{m}\) and charge \(\mathrm{q}\) travelling with a velocity \(v\) along the \(\mathrm{x}\)-axis enters a uniform electric field \(\overrightarrow{\mathrm{E}}\) directed along the y-axis. What will be the trajectory of the particle?TS EAMCET 2022 Medium
- Two circular coils of radii \(r_1\) and \(r_2\left(r_1 \ll r_2\right)\) are placed coaxially with their centers coinciding. The mutual inductance of the arrangement isTS EAMCET 2024 Medium
- A current i flows in an infinitely long, straight and thin walled pipe, thenTS EAMCET 2023 Easy
- Consider the following statements \(A\) and \(B\). Identify the correct choice in the given answers. A. The refractive index of the extra-ordinary ray depends on the angle of incidence in double refraction. B. The vibrations of light waves acquire one sidedness for both ordinary and extraordinary rays in double refraction.TS EAMCET 2002 Medium
- When the angle of inclination of an inclined plane is \(\theta\), an object slides down with uniform velocity. If the same object is pushed up with a initial velocity \(u\) on the same inclined plane; it goes up the plane and stops at a certain distance on the plane. Thereafter the body :TS EAMCET 2006 Medium
More PYQs from TS EAMCET
- A particle is executing simple harmonic motion (S.H.M.). Its acceleration at a distance of from the mean position is If its velocity is when it is at a distance of from its mean position, then the amplitude of S.H.M. is,TS EAMCET 2021 Hard
- A body starting at from origin and oscillates simple harmonically with a period of . After what time will its kinetic energy be of its total energyTS EAMCET 2022 Hard
- The internal and external diameters of a hollow cylinder measured with vernier calipers are \((5.73 \pm 0.01) \mathrm{cm}\) and \((6.01 \pm 0.01) \mathrm{cm}\) respectively. Then the thickness of the cylinder wall isTS EAMCET 2024 Medium
- Fraunhoffer lines are produced by the absorption of light inTS EAMCET 2005 Easy
- A convex lens with lateral magnification 2 is used to image a point at the bottom of a tank. The image of the point is formed \(60 \mathrm{~cm}\) above the lens. Now a liquid is filled into the tank to a height of \(24 \mathrm{~cm}\). It is found that the distance of the image of the same point is now \(120 \mathrm{~cm}\) above the lens. Find the refractive index of the liquid.TS EAMCET 2021 Hard
- The angle of a prism made of a material of refractive index \(\sqrt{2}\) is \(90^{\circ}\). The angle of incidence for a light ray on the first face of the prism such that the light ray suffers total internal reflection at the second face isTS EAMCET 2025 Medium