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The answers to these questions may be submitted to me by e-mail: hdparry@hotmail.com

All you need to do is write down the question number and the answer and send the e-mail.

This homework should be handed in on or before Monday 7th March 2005.

Look at these circuit diagrams, then answer the questions. Explain your answers to all questions. The cells and the bulbs are the same in all three circuits.

Circuit A.

Circuit B.

Circuit C.

1 Is circuit B or C a parallel circuit [1 mark]?

2 If ammeter 1 reads 2 A, what will ammeter 2 read [1 mark]?

3 What would the current in circuit A be if you added another cell [1 mark]?

4 a How bright would the bulbs in circuit B look, compared to the bulb in circuit A [1 mark]?

b If the current in circuit A is 1 A, what would ammeter 3 in circuit B read [1 mark]

c What would ammeters 4 and 5 read [1 mark]

5 How bright would the bulbs in circuit C look compared to the bulbs in circuit B [1 mark]

6 Ammeter 6 reads 0.8 A.

a What does ammeter 7 read [1 mark]?

b What does ammeter 8 read? [1 mark]

c What does ammeter 9 read? [1 mark]

d If you added another cell to circuit C, what would each ammeter read? [1 mark]

7 a Copy circuit C, and add a switch that will switch bulb X on and off, but will not affect the other bulb. [1 mark]

b Make another copy of circuit C, and add a switch that will turn both bulbs on and off together. [1 mark]

Page taken from Exploring Science for use by Southmoor pupils