What is Ohm's Law in its basic form?

What is Ohm's Law in its basic form?

• A. V = I × R.
• B. P = V × I.
• C. R = V × I.
• D. I = R ÷ V.

Answer: (A)

Ohm's law in its basic form shows how voltage, current, and resistance relate in a simple circuit: the voltage across a component equals the current through it times its resistance. This means the pushing force (voltage) is directly proportional to the flow of charges (current) for a given resistance, and you can rearrange it to see other equivalent forms like I = V / R or R = V / I. If you increase the current while the resistance stays the same, the voltage increases proportionally, and likewise, increasing resistance with the same current also raises the voltage needed. The other expressions aren’t correct representations of this relationship: P = V × I is a power formula, not Ohm’s law; R = V × I would imply resistance grows with the product of voltage and current, which isn’t how resistance is defined; I = R ÷ V would give current as R / V, whereas the correct form is I = V / R.

Ohm's law in its basic form shows how voltage, current, and resistance relate in a simple circuit: the voltage across a component equals the current through it times its resistance. This means the pushing force (voltage) is directly proportional to the flow of charges (current) for a given resistance, and you can rearrange it to see other equivalent forms like I = V / R or R = V / I. If you increase the current while the resistance stays the same, the voltage increases proportionally, and likewise, increasing resistance with the same current also raises the voltage needed.

The other expressions aren’t correct representations of this relationship: P = V × I is a power formula, not Ohm’s law; R = V × I would imply resistance grows with the product of voltage and current, which isn’t how resistance is defined; I = R ÷ V would give current as R / V, whereas the correct form is I = V / R.