Q1. Consider the circuit shown (the switch is to be regarded as CLOSED so that the circuit is live).


The resistors X, Y and Z are connected in parallel as shown. The total potential difference is 24 V and the total current on the circuit is 11 A.


  1. Find the potential difference across resistor Y


  1. Find the current passing through resistor Y


Q2. Consider this circuit:



Given that 0.6 A flows through the 10 Ω resistor, calculate:


  1. The current flowing through the 20 Ω resistor

  2. The current flowing through the cell

  3. The potential difference (voltage) provided by the cell



Q3. In the circuit below, lamps P and Q are identical. The reading on the ammeter is 3A. The cell shown is of emf (pd). 6V.



(a) Calculate the current passing through Lamp P


(b) What would the reading be on a volt meter connected across Lamp P ?


(c) Calculate the resistance of Lamp P


Go To >> Solutions <<