A Source of Electromotive Force (EMF)
A Battery
A Voltage Source
A Charge Pump
is really a voltage
The emf of a battery is the maxium possible voltage that a battery can provide between its terminals. It is the open circuit voltage. The terminal voltage when the current is zero.
Rules for determining the potential differences across a resistor and a battery.
each circuit element is traversed from left to right
Dr. Lewin from MIT on DC Circuits
A single loop circuit
contains two resistors
and two batteries.
What power is delivered to each resistor?What is the total power delivered to the circuit?
What is the 12V battery doing to the 6 Volt battery?
