Question

an electric current whose resistance is 20 ohms and a conductor of 4 ohms resistance are connected to a 6 volt battery calculate the total resistance of current a, the current through the current b , the potential difference across the electric lamp and conductor c

Answer 1

A.    The total resistance of the circuit = 20Ω + 4Ω =24 Ω
 
B.     The current through the circuit = current through the bulb = current through the conductor
The current through the circuit = Voltage applied/ the voltage of the battery
The current through the circuit = (6/24) amp
The current through the circuit =0.25 amp
 
C.     The potential difference across the electric lamp and the conductor.
The potential difference across the electric lamp = 0.25 ×20 = 5 volt
The potential difference across the conductor = 0.25 × 4 = 1volt