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8.Electromagnetic waves
easy
A radiowave has maximum electric field intensity of $10^{-4}\ V/m$ on arrival at a receiving antenna. The maximum magnetic flux density of such a wave is
A
$2 \times 10^3\ T$
B
$3 \times 10^4\ T$
C
$5.2 \times 10^{-9}\ T$
D
$3.3 \times 10^{-13}\ T$
Solution
$B=\frac{E}{C}=\frac{10^{-4}}{3 \times 10^{8}}=3.3 \times 10^{-13} \,T$
Standard 12
Physics
