The given figure shows three resistors of
2Ω,
4Ω and
RΩ connected to a battery of EMF 2V and internal resistance
3Ω.A main current of 0.25 A flows through the circuit.
(a) What is the potential difference across the
4Ω resistor?
(b) Calculate the potential difference across the internal resistance of the cell.
(c) What is the potential difference across the
RΩ or
2Ω resistors?
(d) Calculate the value of R.
[5 MARKS]