Let's Solve This Electric Puzzle!
What must be the applied voltage in this particular circuit?
A. 387 V
B. 4.8 V
C. 387 A
D. 4.8 A
Answer: Option (A) is the correct answer.
Ohm's law states that current passing through a circuit is directly proportional to the voltage over resistance.
Mathematically, I = V / R
where, I = current, V = voltage, R = resistance
It is given that the electric device has a current of 9 A and a resistance of 43 ohms. Therefore, we can calculate the voltage as follows:
I = V / R or V = I x R
V = 9 Ampere x 43 Volts/Ampere = 387 V
Thus, we can conclude that the applied voltage in this particular circuit is 387 V.