Laws Of Resistance Physics

In national 5 physics calculate the resistance for combinations of resistors in series and parallel.

Laws of resistance physics. This is an empirical law like that for friction an experimentally observed phenomenon. Where i is the current through the conductor in units of amperes v is the voltage measured across the conductor in. The actual amount of air resistance encountered by the object is dependent upon a variety of factors. The electric property that impedes current crudely similar to friction and air resistance is called resistance r r size 12 r.

Use ohms law to relate resistance current and voltage. Inertia comes from the latin word iners meaning idle sluggish. Such a linear relationship doesn t always occur. Inertia is the resistance of any physical object to any change in its velocity this includes changes to the object s speed or direction of motion.

Introducing the constant of proportionality the resistance one arrives at the usual mathematical equation that describes this relationship. Ohm s law states that the current through a conductor between two points is directly proportional to the voltage across the two points. Air resistance is the result of collisions of the object s leading surface with air molecules. An aspect of this property is the tendency of objects to keep moving in a straight line at a constant speed when no forces act upon them.