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K.C.S.E Physics Q & A - MODEL 2010PP2QN06
Explain why electric power is transmitted over long distances at high voltages.
answer
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K.C.S.E Physics Q & A - MODEL 2001PP1QN32
A 60W bulb is used continuously for 36 hours. Determine the energy consumed. Give your answer in kilowatt hour (kWh).
answer
K.C.S.E Physics Q & A - MODEL 1999PP1QN16
Figure 11 is a graph which shows how the vertical height through which a machine raises a mass 20kg varies with time.
Determine the power output of the machine after 40 seconds.
ANSWER
K.C.S.E Physics Q & A - MODEL 1998PP1QN08
The primary coils of a transformer has 2000 turns and carries a current of 3A. If the secondary coil is designed to carry a current of 30A, calculate the maximum number of turns in the secondary coil.
ANSWERS
K.C.S.E Physics Q & A - MODEL 1997PP2QN04
Figure 4 shows a force- distance graph for a car being towed on a horizontal groun
(a) Calculate the total work done
(b) If the velocity just before reaching point D is 0.6ms-1, calculate the power developed by the agent providing the force at this point. (c) An electric pump can raise water from a low level reservoir to the higher – level reservoir at the rate of 3.0 x 105 kg per hour. The vertical height of the water raised 360m. If the rate of energy loss in form of heat is 200KW, determine the efficiency of the pump
ANSWERS
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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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