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]

The given figure shows three resistors of 2Ω, 4Ω and RΩ connected t

1.	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]
Answer» The given figure shows three resistors of $2 Ω$ , $4 Ω$ and $R Ω$ connected to a battery of EMF 2V and internal resistance $3 Ω$ .A main current of 0.25 A flows through the circuit. (a) What is the potential difference across the $4 Ω$ resistor? (b) Calculate the potential difference across the internal resistance of the cell. (c) What is the potential difference across the $R Ω$ or $2 Ω$ resistors? (d) Calculate the value of R. [5 MARKS]