Electric cooker cables draw more current In the circuit than in the lighting circuit. hence resistance must be very low. The cross-sectional area is inversely proportional to the resistance.
chrispohmomanyi answered the question on October 1, 2017 at 10:14
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Why is Brownian motion only exhibited by small particles?
(Solved)
Why is Brownian motion only exhibited by small particles?
Date posted:
October 1, 2017
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Answers (1)
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A student directed a highly charged pointed conductor towards a candle flame. The flame bent. Explain this observation.
(Solved)
A student directed a highly charged pointed conductor towards a candle flame. The flame bent. Explain this observation.
Date posted:
October 1, 2017
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Answers (1)
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State the main energy changes that take place in a filament lamp.
(Solved)
State the main energy changes that take place in a filament lamp.
Date posted:
October 1, 2017
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Answers (1)
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Explain the meaning of plastic deformation.
(Solved)
Explain the meaning of plastic deformation.
Date posted:
October 1, 2017
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Answers (1)
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Explain why resultant forces on a sky diver changes as his speed increases.
(Solved)
Explain why resultant forces on a sky diver changes as his speed increases.
Date posted:
October 1, 2017
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Answers (1)
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State one useful application of ultrasounds to man.
(Solved)
State one useful application of ultrasounds to man.
Date posted:
October 1, 2017
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Answers (1)
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Explain why nichrome wire is used as a heating element rather than copper.
(Solved)
Explain why nichrome wire is used as a heating element rather than copper.
Date posted:
October 1, 2017
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Answers (1)
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Explain why a magnet would demagnetize when held in East-west direction.
(Solved)
Explain why a magnet would demagnetize when held in East-west direction.
Date posted:
October 1, 2017
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Answers (1)
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Explain why it feels colder at night when the sky is clear than on a cloudy night.
(Solved)
Explain why it feels colder at night when the sky is clear than on a cloudy night.
Date posted:
October 1, 2017
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Answers (1)
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Explain how you can change the weight of an object without changing its mass.
(Solved)
Explain how you can change the weight of an object without changing its mass.
Date posted:
October 1, 2017
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Answers (1)
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State two industrial uses of radioactive substances.
(Solved)
State two industrial uses of radioactive substances.
Date posted:
October 1, 2017
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Answers (1)
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State any two properties of beta radiation
(Solved)
State any two properties of beta radiation
Date posted:
October 1, 2017
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Answers (1)
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State any two practical uses of a capacitor.
(Solved)
State any two practical uses of a capacitor.
Date posted:
October 1, 2017
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Answers (1)
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Explain why vegetables would cook faster in a pressure cooker than when using an ordinary cooking pot.
(Solved)
Explain why vegetables would cook faster in a pressure cooker than when using an ordinary cooking pot.
Date posted:
October 1, 2017
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Answers (1)
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Explain why Nickel-Chromium alloy is suitably used in electric heating elements.
(Solved)
Explain why Nickel-Chromium alloy is suitably used in electric heating elements.
Date posted:
October 1, 2017
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Answers (1)
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State advantages of using mercury other than alcohol as a thermometric liquid.
(Solved)
State advantages of using mercury other than alcohol as a thermometric liquid.
Date posted:
October 1, 2017
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Answers (1)
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Distinguish between diffraction and interference as used in waves.
(Solved)
Distinguish between diffraction and interference as used in waves.
Date posted:
October 1, 2017
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Answers (1)
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Explain why sound waves are not propagated in through vacuum.
(Solved)
Explain why sound waves are not propagated in through vacuum.
Date posted:
October 1, 2017
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Answers (1)
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Describe how you would separate a mixture of graphite and nickel
(Solved)
Describe how you would separate a mixture of graphite and nickel
Date posted:
October 1, 2017
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Answers (1)
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Explain why it is dangerous for a diver to stay for long time under deep water.
(Solved)
Explain why it is dangerous for a diver to stay for long time under deep water.
Date posted:
October 1, 2017
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Answers (1)