Question
1. The speed of an electron is given by the vector v = (2.5i-45j +3.5k)km/s and it is in a magnetic field given by B=
1. The speed of an electron is given by the vector v = (2.5i-45j +3.5k)km/s and it is in a magnetic field given by B= (400i -600j)uT. Determine the magnetic force, in vector form, acting on electron 2. A wire 25 cm long carries a current of 3.5 A in a magnetic field of 20 mT. The angle between the current and the magnetic field is 35. Find the magnetic force acting on wire 3. A rectangular coil of wire has an area of ??625 cm. The coil is in a 40 uT field carrying a current of 50 mA. The number of turns of the coil is 150. Determine: (a) The magnetic torque on the coil when it rotates through an angle of 40 with respect to its axis.(b) The magnetic dipole moment
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