Question

What type of current is stored in a battery?

Answer 1

A battery stores **direct current (DC)**. When a battery is charged, it accumulates electrical energy in a chemical form, which can then be released as DC when connected to a circuit. This is different from alternating current (AC), which is used in most household electrical systems.

Answer 2

A battery stores **direct current (DC)**.

Here’s a bit more detail on how it works:

- **Direct Current (DC)**: In a battery, the chemical reactions occurring within generate a constant flow of electric charge in one direction. This is what we refer to as direct current. When you connect a battery to a circuit, the electrons flow from the negative terminal to the positive terminal, creating a unidirectional current.

- **Battery Chemistry**: Inside a battery, chemical reactions between the electrolyte and electrodes produce a potential difference (voltage) that drives the flow of electrons. This process produces a steady DC output until the battery is depleted or needs recharging.

- **Alternating Current (AC)**: In contrast, alternating current (AC) changes direction periodically and is commonly used for power distribution in homes and industries. If a device needs AC power, such as a household appliance, it will typically use a transformer or rectifier to convert AC from the power grid into DC.

So, in summary, batteries store and supply direct current.