1. 1995 Q12 P1 State two advantages of an alkaline battery over a lead acid battery (2 marks) 2. 1996 Q19 P1 In large current circuits large resistors in parallel are preferred to low resistors in series explain (2marks) 3. 1998 Q10 P1 A car battery requires topping up with distilled water occasionally. Explain why this is necessary and why distilled water is used. 4. 2000 Q10 P1 State one advantage of an alkaline accumulator over a lead – acid accumulator. ![]() 5. 2001 Q10 P1 Explain how polarization reduces current in simple cell. 6. 2003 Q10 P1 State one advantage of a lead – acid accumulator over a nickel – iron (NiFe) accumulator. 7. 2004 Q9 P1 State the purpose of Manganese dioxide in a dry cell 8. 2005 Q9 P1 Fig 7 shows the features of a dry cell (Luclache’). Use the information in the figure to answer question 9 and 10 State the polarities of the parts labelled A and B. (1mark) 9. 2005 Q10 P1 Name the chemical substance in the parts labelled C and D (2marks) C………… D………… 10. 2006 Q4 P2 State a reason why the caps of the cells of a lead- acid battery are opened when charging the battery. (1 mark) 11. 2007 Q2 P2 State one advantage of an alkaline cell over a lead – acid cell (1 mark) 12. 2009 Q4 P2 Give a reason why it is necessary to-leave the caps of the cells open when charging an accumulator (1 mark) 13. 2012 Q3 P2 Figure 3, shows four identical light bulbs connected to a 15 volt battery whose internal resistance is negligible. Determine the reading of the voltmeter V. (2marks)
6 Comments
Mauna
7/6/2022 22:06:24
Whereistheanswers
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Fidelis mutuku
7/4/2021 08:58:39
Good
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M.A NyamotiMy passion is to see students pass using right methods and locally available resources. My emphasis is STEM courses
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