Question

question 13 (1 point)
the resistance of a wire is defined as
(current)*(voltage).
(current)/(voltage).
(voltage)/(current).
none of the given answers

Explanation:

To determine the definition of the resistance of a wire, we use Ohm's Law, which is given by the formula \( V = IR \), where \( V \) is the voltage, \( I \) is the current, and \( R \) is the resistance. Rearranging this formula to solve for resistance \( R \), we get \( R=\frac{V}{I} \). This means resistance is defined as the ratio of voltage to current.

Now let's analyze each option:

• The first option, \( \text{(current)} \times \text{(voltage)} \), does not match the formula for resistance.
• The second option, \( \frac{\text{(current)}}{\text{(voltage)}} \), is the reciprocal of the correct formula for resistance.
• The third option, \( \frac{\text{(voltage)}}{\text{(current)}} \), matches the formula \( R = \frac{V}{I} \) from Ohm's Law.
• The fourth option, "none of the given answers", is incorrect because the third option is correct.

Answer:

C. (voltage)/(current)