Find the mobility of the conduction electrons in a copper conductor if in Hall effect measuremaents performed in the magnetic fileld of induction `B = 100 mT` the transverse electric field strength of the given conductor turned out be `eta = 3.1.10^(3) `times less than that of the longtudinal electric field.

In a crossed field, the magnetic field induction is 2.OT and electric field intensity is 20xx10^(3)v/m . At which velocity the electron will travel In a straight line without the effect of electric and magnetic fields ?

A conductor of length 50 cm carrying a current of 5A is placed perpendicular to a magnetic field of induction 2xx10^(-3) T. Find the force on the conductor.

The maximum force acting on a straight conductor of length 15 cm, placed in a magnetic field of induction 5 xx 10^(-5) N//A m is 3 xx 10^(-4) N then the current flowing in conductor is

The maximum force acting on a straight conductor of length 15 cm, placed in a magnetic field of induction 5 xx 10^(-5) N//A m is 3 xx 10^(-4) N then the current flowing in conductor is

An electron performs uniform circular motion in a region of magnetic field of induction 3 xx 10^(-3) Wb//m^(2) . If the radius of the circular path of the electron is 2 cm , then the momentum of the electron will be

Mobility of free electrons in a current carrying conductor is proportional to (1) Relaxation time (2) Electric field (3) Potential difference (4) All of these

Mobility of free electrons in a current carrying conductor is proportional to (1) Relaxation time (2) Electric field (3) Potential difference (4) All of these

A currrent I is passed through a silver strip of width d and area of cross section A. The number of free electrons per unit volume is n. (a) Find the drift velocity v of the electrons. (b) If a magnetic field B exists in the region as shown in what is the average magnetic force on the free electrons? (c) Due to the magnetic force, the free electrons get accumulated on one side of the conductor along its length. This produces a transverse electric field in the conductor which opposes the magnetic force on the electrons. Find the magnitude of the electric field which will be the potential diference developed across the width of the conductor due to the electron- accumulation? The appearance of a transverse emf, when a current-carrying wire is placed in a magnetic field, is called hall effect.