TS EAMCET · Physics · Electromagnetic Induction
A charged particle moves through a magnetic field perpendicular to its direction. Then
- A kinetic energy changes but the momentum is constant
- B the momentum changes but the kinetic energy is constant
- C both momentum and kinetic energy of the particle are not constant
- D both momentum and kinetic energy of the particle are constant
Answer & Solution
Correct Answer
(B) the momentum changes but the kinetic energy is constant
Step-by-step Solution
Detailed explanation
When a charged particle moves through a magnetic field perpendicular to its direction, it attains a circular path. The magnetic field exerts force in a direction perpendicular to its direction of velocity so its changes at each point but the magnitude is same. Thus work done by…
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
- Two bodies were thrown simultaneously from the origin: one straight up and the other, at an angle, to the vertical. The initial velocity of each body is equal to Neglecting the air resistance, the distance between the two bodies after is ()TS EAMCET 2021 Easy
- A parallel plate capacitor has a capacity \(80 \times 10^{-6} \mathrm{~F}\), when air is present between the plates. The volume between the plates is then completely filled with a dielectric slab of dielectric constant 20. The capacitor is now connected to a battery of \(30 \mathrm{~V}\) by wires. The dielectric slab is then removed. Then, the charge that passes now through the wire isTS EAMCET 2012 Medium
- A rectangular loop of length \(l\) and breadth \(b\) is placed at distance of \(x\) from infinitely long wire carrying current \(i\) such that the direction of current is parallel to breadth. If the loop moves away from the current wire in a direction perpendicular to it with a velocity \(v\), the magnitude of the emf in the loop is : ( \(\mu_0=\) permeability of free space \()\)TS EAMCET 2006 Hard
- The ratio of the energies of the electron in the hydrogen atom in the first and second excited states isTS EAMCET 2023 Medium
- A mass of \(2.9 \mathrm{~kg}\) is suspended from a string of length \(50 \mathrm{~cm}\) and is at rest. Another body of mass \(100 \mathrm{~g}\), which is moving horizontally with a velocity of \(150 \mathrm{~m} / \mathrm{s}\) strikes and sticks to it. Subsequently when the string makes an angle of \(60^{\circ}\) with the vertical, the tension in the string is \(\left(g=10 \mathrm{~m} / \mathrm{s}^2\right)\)TS EAMCET 2013 Medium
- At a location, the horizontal component of the earth's magnetic field is \(0.3 \mathrm{G}\) in the magnetic meridian and the dip angle is \(60^{\circ}\). The earth's magnetic field at this location in \(G\) isTS EAMCET 2018 Easy
More PYQs from TS EAMCET
- The minimum force required to move a body up an inclined plane is three times the minimum force required to prevent it from sliding down the plane. If the coefficient of friction between the body and the inclined plane is \(\frac{1}{2 \sqrt{3}}\), then the angle of the inclined plane isTS EAMCET 2005 Medium
- Two blocks of masses in the ratio \(\mathrm{m}: \mathrm{n}\) are connected by a light inextensible string passing over a frictionless fixed pulley. If the system of the blocks is released from rest, then the acceleration of the centre of mass of the system of the blocks is (g - acceleration due to gravity)TS EAMCET 2025 Medium
- Three logic gates are connected as shown in the figure. If the inputs are \(A=1\) and \(B=1\), then the values of \(y_1\) and \(y_2\) respectively are
TS EAMCET 2024 Easy - A small block of mass \(5 \mathrm{~g}\) and charge \(5 \mu \mathrm{C}\) is placed on insulated, frictionless, inclined plane of angle \(60^{\circ}\). An electric field is applied parallel to the inclined plane. If the block remains at rest then the magnitude of electric field is \(\left[\right.\) Take \(\mathrm{g}=10 \mathrm{~m} / \mathrm{s}^2\))TS EAMCET 2022 Easy
- A thin metallic spherical shell of radius \(r\) contains a charge \(Q\) on its surface. A point charge \(q_1\) is placed at the centre of shell and another charge \(q_2\) is placed outside the shell at a distance \(x\) from the centre. Then, the forces on charges \(q_1\) and \(q_2\) respectively areTS EAMCET 2020 Easy
- A steel rod has a radius of \(10 \mathrm{~mm}\) and a length of \(1 \mathrm{~m}\). A \(80 \mathrm{kN}\) force stretches it along its length. If the Young's modulus of the rod is \(2 \times 10^{11} \mathrm{~N} / \mathrm{m}^2\), then the change in length isTS EAMCET 2020 Medium