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Electric Charge and Field
The SPM Physics Workbook is developed under the One-School.net Free Books Project. The content of this book is strictly follow Malaysia SPM (Sijil Pelajaran Malaysia) syllabus. The aim of this project is to provide a complete electronic supplementary network for students to develop self-learning skills by breaking the spoon-feed rituals and to encourage them to compile educational information from the Internet.
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1) 1.25 ×1019 electrons are added into an object. Calculate the nett charge of the object in the unit of Coulomb. (Charge of 1 electron = -1.6 ×10-19C)
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2C |
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-2C |
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1.5C |
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-1.5C |
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2) 1.25 ×1019 electrons are removed from an object which initially has net charge of +3C. Find the FINAL nett charge of the object.
(Charge of 1 electron = -1.6 ×10-19C)
(Charge of 1 electron = -1.6 ×10-19C)
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3) The charge of an electron is -1.6×10-19C. How many electrons are there in -3 Coulomb of charge?
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4) The charge of a sphere is +2C. Which of the followings is true regarding the sphere?
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5) In the figure above, which picture shows the correct field pattern of the electric field around charged objects?
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6) In the figure above, which picture shows the correct field pattern of the electric field around charged objects?
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7) The SI unit for electric charge is
I. Ampere
II. Ampere second
III. Coulomb
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8) Which of the figure among P, Q, R and S shows the correct observation of a candle flame in an electric field?
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9) The figure shows a ping pong ball coated with a layer of conductor touching a positive plate. What can be observed when the ping pong ball is released?
Magnetic Field
A magnetic field is a region in the surrounding of a magnet which a magnetic material experiences a detectable force.
A magnetic field is a region in the surrounding of a magnet which a magnetic material experiences a detectable force.
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