BioMedical Admissions Test (BMAT) 2025 – 400 Free Practice Questions to Pass the Exam

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What is the resistance (R) formula in terms of potential difference (V) and current (I)?

V ÷ I

The resistance formula in terms of potential difference (V) and current (I) is derived from Ohm's law, which states that the potential difference across a conductor is directly proportional to the current flowing through it. The relationship can be expressed mathematically as:

\[ V = I \cdot R \]

To find the resistance (R), we can rearrange this formula. By isolating R, we divide both sides of the equation by current (I):

\[ R = \frac{V}{I} \]

This indicates that resistance is equal to the potential difference divided by the current. Therefore, the correct expression for resistance in terms of potential difference and current is \( V ÷ I \). Understanding this relationship is fundamental in electrical circuits, helping to determine how much opposition to current flow is present in a given situation.

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I ÷ V

V × I

V - I

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