Imagine that a wire lying on a table carries 2 A of conventional current. All along the wire is a uniform magnetic field directed upwards that has a magnitude of 0.03 T (about the strength of a typical refrigerator magnet). What is the magnitude of the magnetic force acting on each centimeter of the wire? Give your answer in units of mN (10-³ N).

An electric device delivers a current of 4 A to a device. How many electrons flow through this device in 8 s? (e = 1.60 x 10-19 C) At what distance, in centimeters, from the central axis of a long straight thin wire carrying a current of 5.0 A is the magnitude of the magnetic field due to the wire equal to the strength of the Earth's magnetic field of about 5.0 x 10-5 T? (HO = 47 x 10-7 T m/A) %3D

What is the magnitude of the magnetic field (in nT) at a distance of 4 m from a long straight wire which carries a current of 14 A? (in units of nT or nanoteslas)

A short current line carrying I₂ = 4 A is placed on the same plane with a very long one carrying I₁ = 4 A as shown in the figure. The dimensions of the short wire and its position are given as a = 0.5 m, b = 0.4 m and c = 0.8 m. What is the y component of the magnetic force on the short wire in nano- Newtons? (Take Ho = 4 x 10 T-m/A.) O-2560.00 O -1280.00 O 2560.00 O-640.00 O 1280.00 2 b Time left 0:35:59