According to Ohm's Law, if voltage is constant and current increases, what happens to resistance?

• A. It stays the same
• B. It increases
• C. It decreases
• D. It becomes zero

Answer: (C)

Ohm's Law links voltage, current, and resistance with V = I R. When the voltage is held steady, resistance must adjust so that the product I R remains equal to V. If current increases while voltage stays the same, the resistance has to drop, since R = V / I. Doubling the current with the same voltage would halve the resistance. This shows the inverse relationship between current and resistance under a constant voltage. In real devices, temperature can affect resistance, but the math here demonstrates the basic idea: increasing current at a fixed voltage means a smaller resistance.