In a gas chamber two electrodes of area `100cm^(2)` are placed 6cm apart. An electric field produces `10^(9)` pair of monovalent ions `sec/(cm^(3))` .Mobility of each ion is `3.5*10^(-4)m^(2)/Vs`. Calculate the value of applied field (S.l. units)

Two charges +5mu C and +10 mu C are placed 20 cm apart. The net electric field at the mid-point between the two charges is

A rectangular coil of area 50cm^(2) and 100 turns is placed perpendicular to a magnetic field of 10^(-2)Wb//m^(2) . If the coil is withdrawn from the field in 40 ms, calculate the emf induced.

Water is discharged from a pipe of cross-section area 3.2cm^(2) at the speed of 5m//s. Calculate the volume of water discharged: in cm^(3) per sec

A potential difference of 5 V is applied across a conductor of length 10 cm . If drift velcoity of electrons is 2.5 xx 10^(-4) m//s , then electron mobility will be

A coil of area 500cm^(2) and having 1000 turns is held perpendicular to a uniform field of 0.4 gauss. The coil is turned through 180^(@) in 1//10sec . Calculate the average induced e.m.f.

A given wire is bent into a rectangular loop of size 15cm xx 5cm and placed perpendicular to a magnetic field of 1.0 Tesla. Within 0.5sec, the loop is changed into a 10cm square and the field increases to 1.4 Tesla.Calculate the value of e.m.f. induced in the loop?

A smple of HCl gas is placed in an electric field of 2.5xx 10^4 NC^(-1) . The dipole moment of each HCl molecule is 3.4 X 10^(-30) Cm. find the maximum torque that can act on a molecule.

A coil of area 5cm^(2) and having 20 turns is placed in a uniform magnetic field of 10^(3) gauss. The normal to the plane of the coil makes an angle of 60^(@) with the magnetic field. The flux in Maxwell through the coil is:

A coil of area 5cm^(2) and having 20 turns is placed in a uniform magnetic field of 10^(3) gauss. The normal to the plane of the coil makes an angle of 60^(@) with the magnetic field. The flux in Maxwell through the coil is: