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23 Nov 2019

Having issues getting starting on this specific homeworkproblem. Please explain step by step, greatly appreciated!

The rms value of the magnitude of the magnetic field inan electromagnetic wave is 0.214μT. The speed of light is3x108 m/s and permeability of free space is 4π x10-7 T x m/A.

1) Find the rms value is of the electric field. Answer in unitsof V/m

2) Find average energy density. Answer in units ofnJ/m3.

3) Find the intensity. Answer in units of W/m2.

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Jean Keeling
Jean KeelingLv2
10 Jul 2019

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Related textbook solutions

Physics: Principles with Applications
7th Edition, 2013
Giancoli
ISBN: 9780321625922

Related questions

The rms value of the magnitude of the mag-
netic field in an electromagnetic wave is
0.265 μT.
The speed of light is 3 × 108 m/s and per-
meability of free space is 4π × 10−7 T · m/A.


Part 1 - Find the rms value is of the electric field.
Answer in units of V/m.

Part 2 - Find average energy density.
Answer in units of nJ/m3.

Part 3 - Find the intensity.
Answer in units of W/m2.

Instead of sending power by a 700kV, 900A transmission line, onedesires to beam this energy via an electromagnetic wave. The beamhas uniform intensity within a cross-sectional area of 80m^2.
The speed of light is 3x10^8 m/s and the permebility of free spaceis 4π x 10^-7 T M/A

Find the rms value of the electric field in kV/m and rms valueof the magnetic field in mT.

Therms value of the magnitude of the mag-
neticfield in an electromagnetic wave is
0.265µT.
Thespeed of light is 3 × 108 m/s and per-
meabilityof free space is 4π × 10-7 T · m/A.

I knowpart 1, but it is unclear how to get part 2 and 3

Part 1- Find the rms value is of the electric field.
Answerin units of V/m.

Answer= 79.5 V/m


Part 2- Find average energy density.
Answerin units of nJ/m3.

Part 3- Find the intensity.
Answerin units of W/m2.

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