David Sang and Graham Jones Solutions for Chapter: Magnetic Fields and Electromagnetism, Exercise 4: Questions

A current of $0.20A$ flows in a wire of length $2.50 m$ placed at right angles to a magnetic field of flux density $0.060T.$ Calculate the force on the wire.

A $20 cm$ length of wire is placed at right angles to a magnetic field. When a current of $1.5$ A flows in the wire, a force of $0.015$ $N$ acts on it. Determine the flux density of the field .

A wire of length$50 cm$  carrying a current lies at right angles to a magnetic field of flux density$5.0mT.$

(a) If${10}^{18}$electrons pass a point in the wire each second, what current is flowing? (electron chargee $=1.60\times 10-19 C.$)

A wire of length $50cm$ carrying a current lies at right angles to a magnetic field of flux density$5.0mT.$ What force acts on the wire?