Question

current is controlled by:
a) load
b) ground
c) battery
d) none of the above

Explanation:

The load in an electrical circuit determines the resistance. According to Ohm's law ($I = \frac{V}{R}$, where $I$ is current, $V$ is voltage and $R$ is resistance), with a fixed - voltage source (like a battery), the resistance (set by the load) controls the current. Ground is mainly for safety and reference potential, and while the battery provides the voltage, it is the load that directly controls the current magnitude.

Answer:

A. load