A circular loop of wire with 10turns, radius 12.5 cm and resistance 0.75 Ohms is

Question

A circular loop of wire with 10turns, radius 12.5 cm and resistance 0.75 Ohms is connected to a 12V power supply. The magnetic field at the center of this loop is_______. 8.0 x 10-4 T 4.0 x 10-4 T 2.4 x 10-3 T 1.2 x10-3 T


A particle with a charge of 6.0 x10-18 C has a velocity of 5.5 x 106 m/s in a directionperpendicular to a magnetic field of 4.7 x 10-5 T. What is themagnitude of the force on this particle? 2.1 x10-15 N 1.0 x10-15 N 1.6 x10-15 N 5.2 x10-16 N


A constant magnetic field can dono work on a moving charged particle. This is because_______. the magnetic force is alwaysperpendicular to the velocity of the particle the magnetic field isconservative the magnetic field depends upon thevelocity magnetic field is a vector and work isa scalar

Explanation / Answer

Hints use the following formula: 1)         B = ni = nV/R 2 ) F = Bqv

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