Electric charge Flashcards
The force experienced by two point charges is directly proportional to the product of their charge and inversely proportional to the square of their separation
Coulombs law
The work done per unit charge taking a small positive charge from A to B.
Potential difference
The current through an ohmic conductor is directly proportional to the p.d. across it at constant temperature
Ohms law
A flow of one coulomb per second
1 Amp
One joule of energy transferred per coulomb
1 Volt
The energy gained by an electron accelerated by an electric potential difference of 1 Volt
Electron volt
The rate of energy transfer
Power
when energy is transferred to a resistor as internal energy
The heating effect
Direct current refers to a circuit in which the charge flows in one direction.
Direct current
A circuit in which the current direction changes
Alternating current
When the current through a conductor is directly proportional to the potential difference applied across it
Ohmic conductor
The sum of the currents into a junction equals the sum of the currents away from a junction
Kirchoff’s first law
In a complete circuit loop, the sum of the emfs in the loop is equal to the sum of the potential differences in the loop
Kirchoff’s second law
