Question

If the amplitude of the magnetic field is 3 × 10−6 T, then amplitude of the electric field for a

electromagnetic waves is

(a) 100 V m−1

(b) 300 V m−1

(c) 600 V m−1

(d) 900 V m−1​

Answer 1

Answer:

(d) 900 v/m

$\frac{e}{b} = c$

$e = cb$

$= 3 \times {10}^{8} \times 3 \times {10}^{ - 6}$

$= 9 \times {10}^{2}$

$= 900 \frac{v}{m}$