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Ql)‖ the intensity Of electromagnetiC Waves iS 1500W/m2at a pOlnt 3.5m
from the sourCe,CalCulate the electric and rnagnetic field
ed.
Q2)Given that the electric field iS 75 N/C,find the rnagnetiC f‖
6 T
Q3)G市 en thatthe electnC and the magnelc nelds are 80 N/C and 5Xlσ
respeCtiVely,calculate the aVerage power at pOint 5m from the sOurce.
6T,the frequency ofthe waVesiS 5x106 Hz
Q4)if the rnagnetic field is 7x1 0‐
Find the expreSS10n fOr bOth electriC and magnetiC fields Hence shOVV that
the rati0 0f
″
ω′k iS equaltO th9 Speed Of!ight.
at point 3m
power of the electromagnetic waves
average
the
OSJCatcutate
field is 1'5o/o of electric field'
magnetic
the
assuming
by
from the source
is 900 w' Calculate the maximum
point
source
of
power
average
Q6) lf the
at a point 2'5m from the source'
value of electric and magnetic fields
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