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Mdcat-past-papers - UHS - Physics Quiz

Filters: Board: UHS | Subject: Physics |
181. The unit of magnetic flux density is:



182. e/m of electron is given by the relationship:



183. A neutron having mass equal to a proton (mₚ = 1.6 × 10⁻²⁷ kg) is moving in a magnetic field of intensity 1.2 × 10⁻³ T with a speed of 2 × 10⁷ m/s. What is the maximum force experienced by the neutron?



184. Electric forces change the magnitude and direction of velocity while magnetic forces change ------- of velocity.



185. A loop of 5 turns of wire is placed in uniform magnetic field of 0.5T, then area of loop shrinks at a constant rate of 10m²/s, the emf induced is:



186. The unit of magnetic flux density is the tesla, T, it can also be expressed as:



187. One meter long copper rod is moving with speed 20m/s in the magnetic field of strength 0.6 tesla. What is the value of induced emf?



188. The unit of "B" can be written as?



189. A copper hoop is held in a vertical east-west plane in a uniform magnetic field whose field lines run along the north-south direction. The largest induced emf is produced when the hoop is?



190. The induced emf produced in the coil is sometimes called as?



191. The quantity ΔΦ/Δt has the same units as that of?



192. A charge projected with velocity of 10m/s in a magnetic field of 10T at an angle of 60°. If force exerted on charge is 2.78 × 10⁻¹¹N, then value of charge is:



193. A metal rod of length 10cm is moving at a speed of 0.5ms⁻¹ in a direction perpendicular to a 0.2T magnetic field. Find the emf produced in the rod.



194. Working principle of magnetic levitation train is according to?



195. Electric generators and transformers are based on the principles of:



196. Lenz's law in electromagnetic induction is the direct consequence of the principle of conservation of:



197. If we give a direct current to transformer's primary coil, then there will be:



198. In transformer, there is no ................ connection between the two coils but they are..... linked?



199. Working principle of magnetic levitation train is according to?



200. The expression for the emf produced by A.C generator is?



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