Concentration of hydrogen bubbles on the anode insulates the electrons from reaching the anode and hence flow of current ceases. The emf falls.
chrispohmomanyi answered the question on October 1, 2017 at 10:48
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Explain the importance of a fuse in domestic wiring.
(Solved)
Explain the importance of a fuse in domestic wiring.
Date posted:
October 1, 2017
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Answers (1)
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Explain why a ship made of steel will float on water while a coin made of steel sinks.
(Solved)
Explain why a ship made of steel will float on water while a coin made of steel sinks.
Date posted:
October 1, 2017
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Answers (1)
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A ship moves from a region in the sea with fresh water to a region of salty water its weight remaining constant. Explain what is...
(Solved)
A ship moves from a region in the sea with fresh water to a region of salty water its weight remaining constant. Explain what is observed.
Date posted:
October 1, 2017
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Answers (1)
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Explain the function of plimsoll lines on a ship.
(Solved)
Explain the function of plimsoll lines on a ship.
Date posted:
October 1, 2017
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Answers (1)
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Distinguish between kinetic energy and potential energy.
(Solved)
Distinguish between kinetic energy and potential energy.
Date posted:
October 1, 2017
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Answers (1)
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Why are the plane mirrors not used as driving mirrors?
(Solved)
Why are the plane mirrors not used as driving mirrors?
Date posted:
October 1, 2017
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Answers (1)
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Explain why power cables to an electric cooker are thicker than the ones in the lighting.
(Solved)
Explain why power cables to an electric cooker are thicker than the ones in the lighting.
Date posted:
October 1, 2017
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Answers (1)
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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)