Physics, asked by ananya2577, 14 days ago

Consider an EM wave with magnetic field
B= 10^-4sin (wt - kx). The maximum value of its electric field in SI units is....
a) 5 ×10⁴
b) 3×10⁴
c) 5×10³
d) 3×10³​

Answers

Answered by Anonymous
2

Explanation:

If we use that direction of light propagation will be along

E

×

B

. Then (4) option is correct. Detailed solution is as following.

magnitude of E=CB

E=3×10

8

×1.6×10

−6

×

5

E=4.8×10

2

5

E

and

B

are perpendicular to each other

E

.

B

=0

⇒ either direction of

E

is

i

^

−2

j

^

or −

i

^

+2

j

^

from given option

Also wave propagation direction is parallel to

E

×

B

which is −

k

^

E

us along (−

i

^

+2

j

^

)

Similar questions