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A device that creates a potential difference in an electric circuit is?
Wiki User
∙ 13y ago
It is called power supply or battery.
Wiki User
∙ 11y ago
Wiki User
∙ 13y agoa voltage source
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What does electrical potential mean?
Electric potential is like electric potential energy, except electric potential energy requires that you have at least two charged particles: one charged particle (can be considered to be stationary) to produce the electric field and another charged particle to be affected by that electric field. If both charged particles are positively charged, then when you move the nonstationary charged particle closer to the stationary charged particle, potential energy of the system increases, because the charged particles naturally want to repel. However, let's say you remove that nonstationary charged particle and are left with just the single charged particle. There is no more potential energy in the system, because there is no other charged particle to be acted upon by the electric field. However, the single charged particle still emits an electric field. This field is what creates "electric potential." Even though there is no second particle in the system, if you were to place a second particle into the system (let's call it a test particle), its potential energy would be equal to the electric potential multiplied by the charge of the test particle. U = kq1q2/r (electric potential energy with 2 charges, where the 0 of potential energy is infinitely far away) V = kq1/r (electric potential requiring only 1 charge) V = U/q2 (electric potential is potential energy without the second charge) U = Vq2 (electric potential energy is electric potential multiplied by second charge) There is also a concept called gravitational potential, where it's gravitational potential energy divided by the test mass. It can be a negatively charged particle. In that case, electric potential decreases as you get closer to the negatively charged particle. Even though electric potential decreases, if you have two negatively charged particles, electric potential energy increases as you move the 2nd negative charge closer to the first charge. This is because multiplying 2 negative charges makes a positive: U = k(-q1)*(-q2)/r = kq1q2/r (assuming q1 and q2 are the charge magnitudes) So in this case, it's a little weird because that's how the math works. Nature has a tendency to reduce potential energy, but potential is different and doesn't work the same way. However if the test charge was positive, the sign of electric potential energy will be the same as electric potential with respect to location. V = k(-q1)/r = -kq1/r U = k(-q1)(q2)/r = -kq1q2/r Potential energy is not the same as potential! They are related, but don't get them confused. Energy is measured in Joules. Potential is measured in Volts. Completely different units. Volts = Number of Joules / Number of Coulombs. Electric Potential = Electric Potential Energy / Charge of Test Particle
What creates a voltage?
the amount of stuff in it makes it do stuff like voltage. ANSWER: In the sky particles motion creates a potential magnetics and motion will do the same thing. Separation of electric charges (eg by a moving magnetic field as in a dynamo). The more you separate them the higher the voltage. There are chemical ways of doing it, as in a battery.
What is the main difference between an electric motor and electric generator?
An electric generator converts mechanical energy to electric energy while a motor converts electric energy to mechanical. A generator can actually act as a motor if it losses whatever is making it spin (called "motoring"), which is usually a very bad thing. Motors may be used as generators as well, depending on their design.
What is the difference between transformer choke and ballast?
A transformer is a device that transfers electrical energy from one circuit to another through inductively coupled wires. A changing current in the first circuit (the primary) creates a changing magnetic field; in turn, this magnetic field induces a changing voltage in the second circuit (the secondary). By adding a load to the secondary circuit, one can make current flow in the transformer, thus transferring energy from one circuit to the other. A choke is an inductor designed to have a high reactance to a particular frequency when used in a signal-carrying circuit. An electrical ballast (sometimes called control gear) is a device intended to limit the amount of current flowing in an electric circuit. Ballasts vary greatly in complexity. They can be as simple as a series resistor as commonly used with small neon lamps. For higher-power installations, too much energy would be wasted in a resistive ballast, so alternatives are used that depend upon the reactance of inductors, capacitors, or both. Finally, ballasts can be as complex as the computerized, remote-controlled electronic ballasts used with fluorescent lamps.
Why voltage drop occurs?
Every component in a series circuit must have a potential difference across its terminals if current is to flow through that component. We call each of these individual potential differences a 'voltage drop', which is actually a bit of a misnomer as it's not really a 'drop' at all; it would be better termed a 'distribution'. The sum of these 'voltage drops' will then equal the supply voltage applied to the entire circuit.
What device creates a potential difference in an electric circuit?
resistor
Which creates a potential difference in an electric circuit?
A battery can cause that; also, energy provided from some external source - as you would get in your electric outlet.
How does a electric circuit work?
When energy passes through a metal it creates an electric circuit.
How does electricity circuits works?
When energy passes through a metal it creates an electric circuit.
What is the difference between electric potential and electric potential energy?
Electric potential energy is electric energy that is stored in a battery. so all the energy it creates is stored within the battery. It doesn't get used until someone uses it.=Electric potential is the amount of electric potential energy per one coulomb of charge at one point in a circuit compared to the potential energy per one coulomb of charge at another point in circuit also called voltage.=
What is the driving force which causes electrons to flow through conductors?
Voltage is responsible to flow the current in a circuit. Voltage is also known as potential difference or electric pressure. When there is a potential difference across a conductive circuit current starts flow from the higher potential to lower potential.
What is the relationship between potential difference and direction of flow of current in an electric circuit?
Electric current always flows from high potential to low potential. This creates the flow of electric current in an electric circuit.AnswerIn a metal conductor, current is defined as a drift of free electrons. As electrons are negatively charged, this means that current drifts along a conductor from a negative potential to a positive potential.However....Current direction is often defined as a drift from a positive potential to a negative potential. This is termed 'conventional flow', and dates back to when scientists, such as Benjamin Franklin, believed that current was some sort of fluid that flowed from a higher pressure ('positive' pressure) to a lower pressure ('negative' pressure). Although incorrect, conventional flow is still widely-used today in many textbooks.
How does a photocell convert light into electrical energy?
Light heats a photocell, and the difference in temperature creates an electric current(:
What effect does decreased resistance have on a circuit?
resistance is the opposition to the flow of an electric current, therefore the current will decrease as the resistance increases. Resistance also creates heat. This is how the light globes in a circuit light up.
How are electric charges produced?
Charges are produced due to a source providing some energy. e.g cell. Firstly source creates potential difference between terminals and due to this electron at negative end of the terminal move towards positive terminal. In contrast, conventional current flows from positive to negative. In AC circuit electron stay at same place and just vibrate and energy is just passed around the circuit.
What was the effect of curare on eliciting an action potential?
It creates an action potential
You are having to reset your electric water heater breaker daily?
Likely one of the two electric elements is going out which creates very high resistance in the circuit and therefore draws very high current (amps) and causes the breaker to trip.
