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Why is an energy source needed in order to have a working electric circuit?
Wiki User
∙ 6y ago
Ultimately this is a special case of the Second Law of Thermodynamics.In the case of an electric circuit, consider Ohm's Law. Without a voltage, you will have no current.
Also, if a current flows, keeping up the voltage requires power.
Wiki User
∙ 6y ago
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What are the two things needed to make current flow in electricity?
A flow of electrons is needed to have a current. And there (usually) must be a complete circuit. And you need a voltage to make the current move around your circuit. All tied up in Ohms Law - which I'll leave to you.
A salt bridge is needed in an electrochemical cell to buffer provide ions behave as an electrode or complete the electric circuit?
A salt bridge will allow for the completion of a circuit in an electrochemical cell.
Is it true that an electric spark can provide the activation energy needed to start a combustion reaction?
yes
What are the four features required to construct a working simple circuit?
power source, wire, switch, end fixture. Simplest circuit would be a power source and a heating element. No wire or switch needed.
How do you save on electric bill for lighting?
Solar Panels Low energy light bulbs Switch off (or remove) bulbs that are not needed.
What device is needed for current to flow in an electric circuit?
Too vague of a question. As long as it is a closed circuit it will flow.
What is the size of electric cable needed for a ring main circuit in a house?
it is 5mm
What is status of a circuit that is complete and unbroken with flowing electric current?
A circuit that is complete and unbroken with flowing electric current normally has steady supply of voltage with no broken links. Electrical energy flows to light up a bulb or do similar work. Its status is complete, nothing else is needed.
Application of electrical circuit analogies in magnetic circuit?
Magnetic circuit follows equation (4) that is Ni = (Ф) ( l / μA) or m.m.f(magneto motive force) = (Flux) (reluctance).Electric circuit follows ohm's law that is E = I.R or e.m.f(electro motive force) = (current) (Resistance)From above point m.m.f in magnetic circuit is like as e.m.f in electrical circuit.Flux in magnetic circuit is similar as current in electrical circuit.Reluctance in magnetic circuit, S = ( l / μA) is similar to resistance R = (ρl/A) in electric circuit.Permeance (= 1/reluctance) in magnetic circuit is equivalent to conductance (=1/resistance) in electric circuit.In magnetic circuit flux establishes but not flow like as current in magnetic circuit.In magnetic circuit energy needed only to establish the flux but no consistent energy need to maintain it whereas in electric circuit continuous energy needed to flow of current.Resistance of an electric circuit is constant (for same temperature) and is independent of current but reluctance of magnetic circuit is not constant because it depends on μ (=B/H) which is not constant and depends on B/H.
What do you understand by the term fuse in an electric fuse circuit?
Fuse is a device that acts as a traffic controller in the electric circuit, it means it breaks the circuit when the power of current is more than what it it needed and prevents the possible damages ...
What from of energy might be needed for a chemical reaction to take place?
heat & electric energy !
What jobs dose a battery do in the circuit?
The purpose of the battery in a circuit is to wive energy to the circuit
What are the two things needed to make current flow in electricity?
A flow of electrons is needed to have a current. And there (usually) must be a complete circuit. And you need a voltage to make the current move around your circuit. All tied up in Ohms Law - which I'll leave to you.
If house has no electric meter how can you energize 120v circuit with extension cord or portable generator to operate light switchs?
You can energise the circuit by connecting to a neighbour's supply, then they will pay for the energy used. Anything different is classed as theft. An electrician would be needed to do the job safely.
What components are needed to make an electric circuit works?
Globe Switch Wires(to connect) power Pack
Why an electric connection has 2 wires?
Two wires are needed so that the electric current has a circuit to flow round. For a simple circuit, the voltage between the wires, multiplied by the current in amps, gives the power in watts, which is how fast energy is used up (joules per second). Also, the voltage divided by the current gives the resistance of the load, in Ohms.
A salt bridge is needed in an electrochemical cell to buffer provide ions behave as an electrode or complete the electric circuit?
A salt bridge will allow for the completion of a circuit in an electrochemical cell.
