IB Physics. Electricity
/A tutorial sheet on the IB Physics topic B3 electricity is given below.
- In a wire N electrons per minute move to the right past a point every second. Find an expression for the current.
- The emf of a cell is E. The internal resistance of the cell is r. Find the work done by the cell in moving a charge q between its terminals.
- The potential difference across a resistor is V when it is connected in series to a cell of zero internal resistance. Find the potential difference across this resistor when two equal resistances which are connected in parallel are placed in series with the first resistor.
