Which component provides the energy for electrical devices to function?

Which component provides the energy for electrical devices to function?

• A. Circuit diagram
• B. Battery
• C. Resistor
• D. Cell

Answer: (D)

A cell provides the energy that powers electrical devices. It converts chemical energy into electrical energy, creating a voltage difference across its terminals. This voltage pushes electrons through the circuit, delivering energy to loads like lights or motors. In a simple circuit, the cell is the source of energy; a circuit diagram is just a map of connections, a resistor consumes energy as heat, and a battery is simply a collection of cells that together supply energy. So the energy comes from the cell, the basic energy source in this context.

A cell provides the energy that powers electrical devices. It converts chemical energy into electrical energy, creating a voltage difference across its terminals. This voltage pushes electrons through the circuit, delivering energy to loads like lights or motors. In a simple circuit, the cell is the source of energy; a circuit diagram is just a map of connections, a resistor consumes energy as heat, and a battery is simply a collection of cells that together supply energy. So the energy comes from the cell, the basic energy source in this context.