Yes. There is a force which keeps the terminals charged and maintains a potential difference between them. This force originates from chemical reactions in a battery or magnetic force in a generator.esha said:are these terminals charged so as to maintain an electrical field and if they are charged who is keeping them charged continuously?
I don't know much about chemical reactions and resulting forces. You can post in the general physics or chemistry forums for further details.esha said:how does chemical reactions originate forces? they can release or absorb energy. isn't it?
EMF stands for electromagnetic force, which is a type of physical force that is responsible for the interaction between electrically charged particles. This force is created by the movement of charged particles, such as electrons, and is essential for the functioning of many electronic devices. EMF works by creating a force field around charged particles, which can attract or repel other charged particles within its range.
The main components of EMF are force, terminals, and charge carriers. Force refers to the physical force that is created by the movement of charged particles. Terminals are the points at which the force is applied, such as the positive and negative terminals of a battery. Charge carriers are the particles that carry an electric charge, such as electrons or protons.
EMF plays a crucial role in the functioning of electric circuits. When a circuit is closed, the flow of electrons through the circuit creates a magnetic field, which in turn creates an EMF. This EMF can either aid or hinder the flow of electrons, depending on the direction of the current and the polarity of the EMF. This phenomenon is known as electromagnetic induction and is responsible for the functioning of generators and motors.
EMF can be measured using a device called an electrometer. This device uses a set of plates or probes to detect the presence of an electric field and measure its strength. The unit of measurement for EMF is volts, which represents the amount of force exerted on an electric charge at a certain point in the electric field.
There is ongoing research on the potential health effects of EMF exposure. Some studies suggest that long-term exposure to high levels of EMF may increase the risk of certain health issues, such as cancer and neurological disorders. However, more research is needed to fully understand the effects of EMF on human health.