Final answer:
According to Ohm's law, the voltage needed to push 1 Amp of current through 1 ohm of resistance is 1 Volt, as V = IR, with I being 1 Amp and R being 1 ohm.
Step-by-step explanation:
According to Ohm's law, the amount of voltage needed to push 1 Amp of current through 1 ohm of resistance is 1 Volt. This is derived from the formula V = IR, where V represents the voltage in volts, I represents the current in amperes (Amps), and R represents the resistance in ohms (Ω). When I = 1 Amp and R = 1 ohm, using Ohm's law, V = 1 Amp × 1 ohm = 1 Volt. Therefore, the correct answer is a. 1 Volt.