The Electric Field Component of an Electromagnetic Wave Is 130 $7.5 \times 10 ^ { - 8 } \mathrm {~J}$

Multiple Choice

The electric field component of an electromagnetic wave is 130 V/m. The electric energy density of the wave is

A) $7.5 \times 10 ^ { - 8 } \mathrm {~J}$
B) $7.5 \times 10 ^ { - 8 } \mathrm {~J} / \mathrm { m }$
C) $7.5 \times 10 ^ { - 8 } \mathrm {~J} / \mathrm { m } ^ { 2 }$
D) $7.5 \times 10 ^ { - 8 } \mathrm {~J} / \mathrm { m } ^ { 3 }$