All conductors oppose electron current flow and warm up some, except the superconductors. That's because all conductors (save the superconductors) have some amount of resistance to the flow of current. That means any voltage applied will drive some current through a conductor, and the resistance will cause some amount of heating to take place. ======================================== Any conductor with a finite resistance (R > 0) will do. However, to be safe to the human operator and an efficient heat source, use a higher-resistance conductor wound in a spiral, such as the tungsten filament in an incandescent light bulb, which turns hot very quickly, but mostly emits infrared radiation (heat). Please check the related link for more information. ===============================
collisions with immobile ions and co free electrons
Static friction is the type of friction that opposes the motion.
Lift is the upward force that opposes the force of gravity.
Compressible fluid force opposes lift. Lift is the upward force due to the fluid flow around an airplane wing. Weight is a downward force caused by gravity which opposes lift.
Current.
Drag
I resistor is called so because it provides electrical resistance (measured in ohms). Electrical resistance describes how an electrical conductor (a wire) opposes the flow of an electrical current (flow of electrons). To overcome this opposition a voltage (a energy) must dropped (used) across the conductor (wire).
property of a conductor that opposes the flow of charge passing through it
The opposite of a conductor (conducts electric flow) is a non-conductor, or something that opposes the flow, which would be an insulator.
The opposite of a conductor (conducts electric flow) is a non-conductor, or something that opposes the flow, which would be an insulator.
inductance
Resistance is a measure of how much an object opposes the passage of electrons
Alternators convert rotating mechanical energy into electrical energy. Alternators produce electrical energy by induction of the coil wires by the spinning electromagnet rotor. The back voltage and eddy currents produce a magnetic field that opposes the rotation of the rotor, conserving total energy.
Free electrons in the conducting carry a charge, and electrons are influenced by magnetic waves. Thus if a magnetic wave is generated by the changing field, electrons will feel the influence. Since the system is naturally stable it will resist changes, and thus it opposes the influence. The current flowing in the conductor will generate a field opposing the incoming field.
Capacitance is the capacity to store electric charges, usually a small amount of it, in a capacitor.Capacitive reactance is the reactance associated with a capacitor. Reactance is something that opposes the flow of current, in an AC circuit - but, unlike resistance, DOES NOT convert electrical energy into heat.
When stranded conductor is being used for earthing, It offers some reactance in addition to the resistance of the conductor. Since any kind of surge is of sudden in nature, and reactance opposes the change in flow of current (Property of Inductor), It might disturb the discharge rate of the surge. Hence the conductor is flat inorder to provide only the resistance
The usual setup is called a generator. The basic idea here is that a piece of wire moves through a magnetic field; this will cause an electrical current. The electrical current causes another magnetic field that opposes the movement, so it requires (mechanical) energy to keep it moving.The usual setup is called a generator. The basic idea here is that a piece of wire moves through a magnetic field; this will cause an electrical current. The electrical current causes another magnetic field that opposes the movement, so it requires (mechanical) energy to keep it moving.The usual setup is called a generator. The basic idea here is that a piece of wire moves through a magnetic field; this will cause an electrical current. The electrical current causes another magnetic field that opposes the movement, so it requires (mechanical) energy to keep it moving.The usual setup is called a generator. The basic idea here is that a piece of wire moves through a magnetic field; this will cause an electrical current. The electrical current causes another magnetic field that opposes the movement, so it requires (mechanical) energy to keep it moving.
Lenz's law states that 'for a current induced in a conductor by a changing magnetic field, the current is in such a direction that its own magnetic field opposes the change that produced it.'