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LaoThe positive and negative terminals in an electrical device indicate the direction of flow of electrical current. Electrons flow from the negative terminal to the positive terminal, creating an electrical circuit. This polarity helps ensure that the device functions properly and efficiently.
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What are positive and negative terminals?
Positive and negative terminals are locations on a device or component where electrical connections can be made. The positive terminal typically has a higher voltage potential, while the negative terminal has a lower voltage potential. Ensuring proper connection to these terminals is important for the correct operation of electrical circuits.
What is a device that move electrons along a path often a battery?
A device that moves electrons along a path is called a circuit. In a circuit, electrons flow from the negative terminal of a battery, through the components in the circuit, and back to the positive terminal of the battery, creating electrical energy.
What device separates positive and negative charges?
A device that can separate positive and negative charges is a capacitor. Capacitors store electrical energy by storing positive charges on one plate and negative charges on the other plate, creating an electric field between them.
When a device uses two batteries why do they have to be placed positive to negative?
When two batteries are connected in series in a device, they have to be placed positive to negative to increase the total voltage output. This connection method increases the overall voltage by summing the individual voltages of each battery. Placing them positive to negative ensures that the voltages add up instead of canceling out.
What is the cathode in an electrochemical cell?
The electrode at which a reduction reaction occurs.PhysicsA cathode is the element of an electron tube from which electrons flow. Back in the day, current was thought to be positive, but we understand things differently now. In the "old school" version, the cathode was the element into which positive charges flowed. But that's usually not what is taught for the simple reason that it's a classical physics approach and isn't at all as useful as the idea that the cathode is the element from which electrons leave to go to the plate.In a two-element tube, the cathode has a compliment called the anode, or plate. Electrons flow from the cathode to the anode. Not the other way. There are tubes with three, four, and more elements, but they have these two basic elements.ChemistryThe cathode is the electrode of a polarized electrical device, such as a galvanic cell, out of which positive electric current flows. In a battery like the one in a vehicle, the positive terminal is the cathode. The car battery, which is a lead-acid battery, also has an electrode that is the compliment to the cathode: the anode. It's the negative terminal of the battery, and positive electric current flows into this electrode.The Wikipedia article on the cathode covers both the chemistry application of the term as well as the physics application, and a link is provided.
