If the Power Rating of A $400 - \Omega$ Resistor Is $0.80 \mathrm {~W}$

Multiple Choice

If the power rating of a $400 - \Omega$ resistor is $0.80 \mathrm {~W}$ , what is the maximum current it can safely draw?

A) $45 \mathrm {~mA}$
B) $320 \mathrm {~mA}$
C) $4.4 \mathrm {~mA}$
D) $18 \mathrm {~mA}$
E) $2.0 \mathrm {~mA}$