-Heat is given off as electric current flows through a material/conductor and encounters resistance; the electrons flowing through it hit atoms inside of the conductor, giving off heat. Moreno, conductors that are heated to high temperatures will become more resistant to electric current because their atoms are rapidly moving.
-It is warm near an incandescent light bulb because in order for the bulb to produce light, it had to achieve thermal emission; infrared rays passing through the filaments in the light bulb continued to shorten and grow hotter until they entered the spectrum of visible light.
-A superconductor is a material whose atoms are barely moving, creating conditions in which electrons can move with little resistance.
-Ampere's law states that, when you pass current linearly through a conductor, a magnetic force is applied to it in a circular way, with the direction of the magnetic field depending on the direction of the current.
-If current of the same size flows in the same direction in two adjacent electric wires, the magnetic fields add together and the wires attract each other.
-If current of the same size flows in opposite directions in two electric wires placed side by side, the magnetic fields are rendered null and the wires repel each other.
Subscribe to:
Post Comments (Atom)
No comments:
Post a Comment