Question

An electromagnetic wave in a vacuum has an instantaneous magnetic field (5.00) strength of 0.000000785 T at a certain point. What is the instantaneous electric field strength of the wave at this point?

Answer 1

electric field strength is 235.5 V/m

Step-by-step explanation:

given data

magnetic field (5.00)

strength = 0.000000785 T

to find out

electric field strength

solution

we will apply here formula that is

electric field strength = strength × speed of light

put here all these value in equation 1 we get

here speed of light = 3 ×
`10^(8)` m/s

electric field strength = strength × speed of light

electric field strength = 0.000000785 × 3 ×
`10^(8)`

electric field strength = 235.5

so electric field strength is 235.5 V/m