Question

Which of the following statements about electrical resistance through a conductor is TRUE?

A. Increasing the cross sectional area decreases the resistance
B. Decreasing the resistivity increases the resistance
C. Increasing the length increases the resistivity, but does not change the resistance
D. For an ohmic material, voltage difference increases exponentially with applied current
E. For most conductors, increasing the temperature decreases resistivity

Answer 1

The true statement about electrical resistance through a conductor is that increasing the cross-sectional area decreases the resistance. Other options are incorrect based on the principles of electric resistance and resistivity.

Step-by-step explanation:

The question asks which statement about electrical resistance through a conductor is true. To determine the correct response, we should consider the principles of electric resistance and resistivity. Upon review, we can confirm that statement A is true: Increasing the cross-sectional area decreases the resistance. This is because the resistance R is inversely proportional to the cross-sectional area A of the conductor. The other statements are incorrect because: decreasing the resistivity would decrease, not increase the resistance; increasing the length does increase the resistance and not just the resistivity; for an ohmic material, the voltage difference increases linearly, not exponentially, with applied current; and for most conductors, increasing the temperature increases resistivity.