Instantaneous Energy Density: 501 N/C

[hotstuff]

At a given instant of time in an electromagnetic field the Electric Field has a value of 501 N/C. To the nearest hundredth of a mJ/m3, what is the instantaneous energy density at that point?

 

[geosonel]

At a given instant of time in an electromagnetic field the Electric Field has a value of 501 N/C. To the nearest hundredth of a mJ/m3, what is the instantaneous energy density at that point?

try the following URL link:
http://hyperphysics.phy-astr.gsu.edu/hbase/electric/engfie.html#c1

 

[thepatientmental]

The instantaneous energy density at that point can be calculated by using the formula:

Instantaneous Energy Density = (Electric Field)^2 / (2 * Permittivity of Free Space)

Substituting the given value of electric field (501 N/C) and the value of permittivity of free space (8.85 * 10^-12 F/m), we get:

Instantaneous Energy Density = (501 N/C)^2 / (2 * 8.85 * 10^-12 F/m)

= 125,501 N^2 / C^2 * m / F

= 125,501 * 10^6 mJ/m^3

= 125.50 mJ/m^3

Therefore, the instantaneous energy density at that point is approximately 125.50 mJ/m^3.