1. How much energy is gained by a charge of 5C when it passes between two metal plates which are at the voltages shown below:



  2. In the following circuit calculate the p.d. across the 16 ohm resitor.



  3. An air bag has a mass of 370.58g. When some air is squeezed out of the bag into an upturned flask in water the volume of air squeezed out equals 1687.00 cm3
    When the air bag`s mass is measured again it is found to be 368.72g.
    Calculate the density of air in kgm-3







  4. A ball is thrown upwards into the air with a velocity of 8m/s. Calculate the height the ball was thrown and the time taken for the ball to go up and down.

  5. An electron passes through a tv tube as shown below
    a)What is the energy gained by the electron as it passes from cathode to anode?
    b) What would be the electron`s velocity just as it leaves the 5kV anode?


  6. Richard built this circuit:


    When the switch is open the voltmeter reads 12V.
    When the switch is closed the voltmeter reads 11.8V.
    a) What is the EMF of the cell?
    b) What is the current flowing in the circuit?
    c) What is the internal resistance of the cell?


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