| A | B |
|---|
| charge flows acording to | potential diference, voltage |
| current | flow of electrons |
| resistence depends on | conductivity of material, thickness of wire, length of wire, and temperature |
| flows through circuit | charge not voltage |
| causes current | voltage |
| speed of electrons | .01 cm/s |
| speed of electric signal | 3*10 to the 10th power cm/s |
| diode | changes ac to dc |
| electric circuit | closed pathalong which current will flow if there is potential difference |
| series circuit | there is one pathway for current to move through a break causes an open circtuit, CURRENT SAME |
| parallel circuit | more that one pathway for current to move through a break only causes current to stop in that one path, VOLTAGE SAME |
| magnetic material | atoms aligned into magnetic domain with electrons spinning same directions |
| temporary magnets | bringing a piece of metal in contact with a magnet induces aligned domain |
| electromagnetic forces | moving electric charges create magnetic fields moving magnetic fields produce ellectric current spinning electrons produce magnetic fields |
| non magnetic material | electrons not aligned |
| magnetic force= | mag. field=(b) * length of wire * current=(I) |
| magnetic field(b)= | mag. force/charge * speed |
| induced voltage | moving magnates or wire around each other affected by speed, #of coils, and strength of magnate |
| faraday's law | the induced voltage in a coil is porportional to the product of the # of loops and rate at which mag field changes within the loops |
| flux | the number of mag field lines passing through a givin area measured in webbers |
