A 1300-N/C Electric Field in a Polyethylene Dielectric $K = 2.3$

Multiple Choice

A 1300-N/C electric field in a polyethylene dielectric, $K = 2.3$ , has an energy density of

A) $1.7 \times 10 ^ { - 5 }$ J/m $3$
B) $2.9 \times 10 ^ { - 7 }$ J/m $3$
C) $5.6 \times 10 ^ { - 5 }$ j/m $3$
D) $8.5 \times 10 ^ { - 6 }$ j/m $3$