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Explain what happens when a negatively charged polythene rod touches the cap of the positively charged electroscope.
Date posted:
September 28, 2017
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Define the term local action
Date posted:
September 28, 2017
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Explain why solids have definite shapes.
Date posted:
September 28, 2017
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Describe one method of determining the diameter of the oil drop
Date posted:
September 27, 2017
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State the principle of conservation of energy
Date posted:
September 27, 2017
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State any three ways by which power is lost in the transformer.
Date posted:
September 27, 2017
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Explain why transformers are used at generating stations to step up the voltage for transmission.
Date posted:
September 27, 2017
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Explain why soft iron core is more suitable than steel core for use in the electromagnet.
Date posted:
September 27, 2017
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Define the term work function.
Date posted:
September 27, 2017
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Define the term velocity and acceleration.
Date posted:
September 27, 2017
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Explain why water would boil faster at the mountain top than at the sea level.
Date posted:
September 27, 2017
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Explain why mercury does not wet the glass.
Date posted:
September 27, 2017
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Metals cannot be charged by friction. Explain.
Date posted:
September 27, 2017
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State three effects produced by an electric current.
Date posted:
September 27, 2017
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Explain why is it easier to open a metallic cap of a glass bottle by inserting it hot water.
Date posted:
September 27, 2017
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Define radioisotopes
Date posted:
September 27, 2017
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Explain how can a concave mirror be used as a shaving mirror
Date posted:
September 27, 2017
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State the principle of conservation of momentum
Date posted:
September 27, 2017
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State ways of reducing friction between two surfaces
Date posted:
September 27, 2017
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Explain why on a hot day, a dry road may seem to have pools of water when observed from a distance.
Date posted:
September 27, 2017
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State any three factors on which the resistance of the conductor depends
Date posted:
September 27, 2017
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Explain why one feels colder when walking on a concrete floor than on the carpeted floor.
Date posted:
September 27, 2017
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State Faraday’s law of electromagnetic induction.
Date posted:
September 27, 2017
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Explain why the sky appears blue.
Date posted:
September 27, 2017
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Describe how the type of charge on a charged metal rod can be determined.
Date posted:
September 27, 2017
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Define capacitance
Date posted:
September 27, 2017
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State two conditions that must be met for a conductor to obey Ohm’s law.
Date posted:
September 27, 2017
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Define an Ohm.
Date posted:
September 27, 2017
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Explain why an alkaline battery delivers a larger current than a lead acid accumulator.
Date posted:
September 27, 2017
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Explain why the mercury level of a liquid in a glass thermometer falls before rising when put in boiling water.
Date posted:
September 27, 2017