Electricity🔸 Flashcards
Battery
Chemical reaction releases charged particles.converts chemical potential energy into electrical energy
Electric current
Flow of charge
Solids
Electrons Kerrie the charge they are free to move
Fluids (car battery)
Positive and negative ions as well as electrons may flow
Flow of charge
Charge close to the potential difference (voltage)/will continue until both ends reach the same potential
Voltage
Attentional different/provides the electric pressure to move charge between the terminals in a circuit
Water flows
From high to low pressure
How does a potentiometer work?
Is a variable resistor that changes resistance by changing like the flyer
Parallel circuit
- more resistance lowers total resistance
- voltage drop across parallel resistance is the same
- current in parallel resistance sums to total correct
Series circuit
- more resistance increases total resistance
- total voltage drop must sum to original voltage
- current through all resistors is the same
Factor -resistance changes
Length-^length^ resistance
Temperature-^t^r
Cross sections -lower cs ^r
Material -resistance varies with material used