Final answer:
The current in an electrical circuit is controlled at specified amps and volts to ensure proper operation of appliances and to protect against overloads. It also allows for efficient transmission of power with minimal losses.
Step-by-step explanation:
The current in an electrical circuit is controlled at specified amps and volts for several reasons. Firstly, most electrical appliances are rated in amps required for proper operation. Fuses and circuit breakers, which limit the current in a circuit, are also rated in amps. This ensures that the current flowing through the circuit is within the safe operating range of the appliances and protects against overloads. Additionally, controlling the current at specified volts allows for efficient transmission of power through electrical lines, minimizing losses due to resistance.