Question

A current of 9 A flows through an electric device with a resistance of 43 ohms. What must be the applied voltage in this particular circuit?

A. 387 V
B. 4.8 A
C. 387 A
D. 4.8 V

Answer 1

One form of Ohm's law says:

                             Voltage  =  (current) x (resistance).

                                         =  ( 9 A )  x  (43 ohms)

                                         =         387 volts.

Choice-A says this.  

Answer 2

Use Ohm law

Voltage = (current) x (resistance). = ( 9 A ) x (43 ohms) = 387 volts.

Answer is A 387 V DO NOT make a mistake and check 387 A