The degree to which a substance opposes the flow of
electron current in it.
resistors can control or going
through the circuit.
when electrons travel through a resistor, some of their gets
used up ­ therefore they decrease the

Abicycle slows down when the rider applies the brakes. what type of energy transformation is involved in this example? a. kinetic energy into heat energy b. heat energy into potential energy c. potential energy into kinetic energy d. kinetic energy into mechanical energy

Light from a sodium lamp passes through a diffraction grating that has 1000 slits per millimeter. the interference pattern is viewed on a screen 1.000 m behind the grating. the first (m = 1) two bright yellow fringes that are visible are 0.7288 m and 0.7300 m from the central maximum. what are the wavelengths of these two fringes?

Acoil suspended freely, points in some direction when no current is passed through it . can you tell what will happen when a current is passed though it?