An Electric Motor, Under Load, Has an Effective Resistance of 30

Multiple Choice

An electric motor, under load, has an effective resistance of 30 $\Omega$ and an inductive reactance of 40 $\Omega$ . When powered by a source with a maximum voltage of 420 V, the maximum current is:

A) 6.0 A
B) 8.4 A
C) 10.5 A
D) 12.0 A
E) 14.0 A