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I=√2sin(100πt-π⁄2),find frequency?
in an electric feild the potential at a point is given by following relation: V=343/r.
the electric feild at r=3i+2j+6k is
Using Maxwell’s equations in free space, derive the wave equation for the electric field vector. Obtain the conditions under which the following time varying electric and magnetic fields satisfy Maxwell’s equations in vacuum with no source charges or currents:
E = k^E0 sin( y − vt)
B = i^B0 sin( y − vt)
where E0 and B0 are constant.
Using Maxwell’s equations in free space, derive the wave equation for the
electric field vector. Obtain the conditions under which the following time varying
electric and magnetic fields satisfy Maxwell’s equations in vacuum with no source
charges or currents:
sin ( )
ˆ
0 E = k E y − vt
) sin (
ˆ
0 B = i B y − vt
where E0 and B0 are constant.
) A uniform plane wave of 100 kHz travelling in free space strikes a large block of a
material having 4 , 9 and 0 ε = ε0 µ = µ0 σ = normal to the surface. If the incident
magnetic field vector is given by
10 cos( ) ˆ tesla 6 B = ωt −βy z

r
write the complete expressions for the incident, reflected, and transmitted field
vectors.
a stiff metal rod kept over two knife edges of length 1m. rod carries current of 16A. and rolls over rails without slipping due to uniform magnetic field of 0.5T perpendicular pointing downwards. rod starts from rest and attains speed of K/root5 when leaves rails. find value of K
A charge particle velocity in a plane perpendicular to a magnetic field describes a
In the cathode ray oscilloscope, when fast moving electrons strike the glass screen coated with zinc and sulphide they cause
A Wheatstone bridge ABCD (labelled in clockwise direction) with a galvanometer G joined to the junctions B and D. A cell E is connected across AC. Resistances of 15, 10, 4 and X ohms are inserted into the arms AB, BC, CD and DA respectively. The value of X is ------- ohms
A LRC series circuit has L=8.2mH, R=33ohm, and C=33uF. IF the ac source is 60-Hz and 5.0Vrms voltage, what is:
(a) the rms current in the circuit,
(b) the rms voltage of each element of the circuit
(c) the phase angle,
(d) the average power dissipated?
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