Emf And Internal Resistance Flashcards
The resistance of an emf source is
The internal resistance
How is power lost through a component
Thermal energy
A large current though an internal resistance could do what
Damage the emf source
The effect of having an internal resistance is
An emf will never be able to fully supply it’s supposed voltage
Bigger drop of voltage( from internal resistance) =
Bigger current
Resistance does what?
Slows down the flow of charge (current)
Resistance is a property of a ?
Conductor
Resistivity of a metal increases with ?
Temperature
When electrons gain more energy = ?
Higher frequency of electron collisions
Superconductors reduce resistance from ?
Large currents
Internal resistance- no current being drawn means ?
No lost volts
When KE increases, this means =
Increased amplitude of ions
A power is lost through a component through = ?
Thermal energy (Ohmic heating)
Voltage down of internal resistance means = ?
Current goes up
