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Moving Charges and Magnetism
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Avg score: 68% • Most missed: “A positively charged particle moving due eastenters a region of uniform magnetic…”
Moving Charges and Magnetism
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15 Questions

1. A deuteron of kinetic energy 50 ke V is describing acircular orbit of radius 0.5 metre in a planeperpendicular to the magnetic field BThe kinetic energyof the proton that describes a circular orbit of radius0.5metre in the same plane with the same B is [1991]
2. To convert a galvanometer into an ammeter - one needs to connect a [1992]
3. A uniform magnetic field acts at right angles to thedirection of motion of electronAs a result - the electronmoves in a circular path of radius 2cmIf the speed ofelectron is doubled - then the radius of the circular pathwill be [1991]
4. A positively charged particle moving due eastenters a region of uniform magnetic field directedvertically upwardsThe particle will [1997]
5. An electron enters a region where magnetic field(B) and electric field (E) are mutually perpendicular - then [1994]
6. A galvanometer of resistance 20 Ω gives full scaledeflection with a current of0.004 ATo convert it into anammeter of range 1 A - the required shunt resistanceshould be [1996]
7. The total charge induced in a conducting loop whenit is moved in a magnetic field depends on [1990]
8. Energy in a current carrying coil is stored in theform of [1989]
9. A charge moving with velocity v in X-direction issubjected to a field of magnetic induction in negative XdirectionAs a result - the charge will [1993]
10. A straight wire of diameter0.5 mm carrying acurrent of 1 A is replaced by another wire of 1 mmdiameter carrying same currentThe strength ofmagnetic field far away is [1995 - 97 - 99]
11. Tesla is the unit of [1988]
12. The magnetic field at a distance r from a long wirecarrying current i is 0.4 teslaThe magnetic field at adistance 2 r is [1992]
13. An electron enters a region where magnetic field(B) and electric field (E) are mutually perpendicular - then [1994]
14. A galvanometer of resistance 20 Ω gives full scaledeflection with a current of0.004 ATo convert it into anammeter of range 1 A - the required shunt resistanceshould be [1996]
15. A straight wire of length 0.5 metre and carrying acurrent of 1.2 ampere is placed in uniform magnetic fieldof induction 2 teslaThe magnetic field is perpendicularto the length of the wireThe force on the wire is [1992]

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