Question

When a wire is made smaller, the resistance increases. Which happens to the electric current? A. The current decreases. B. The current increases. C. There is no effect on the current.

Answer 1

Answer:

If there is a voltage source connected to the wire, the current will decrease as per Ohm's Law.

Explanation:

Supposing that there is a battery that provides potential difference to the ends of the wire, the actual current will decrease from the previous situation, according to Ohm's Law: $V=I*R\\I=\frac{V}{R}$

From this equation, with a constant V of the power source as the resistance "R" increases (larger in the denominator of that rational expression) the current "I" will decrease.