electric current and magnetism - Category wise Question and Answer Practice Test with Solutions
electric current and magnetism PRACTICE TEST [9 - EXERCISES]
set 1
set 2
set 3
set 4
set 5
set 6
set 7
set 8
set 9
Question : 1
For electroplating a spoon, it is placed in the voltameter at
a) the position of cathode
b) exactly in the middle of anode and cathode
c) the position of anode
d) anywhere in the electrolyte
Answer »Answer: (a)
In electroplating, the metallic ions are positive, which are deposited on cathode.
Question : 4
Potential at any point inside a charged hollow sphere
a) is a constant
b) decreases with distance from centre
c) increases with distance
d) is zero
Answer »Answer: (a)
As, E = $ -{dV}/{dr}$ or, O= $- {dV}/{dr}$
Because electric field inside a charged hollow sphere is zero. or, v = constant
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» Measurement And SI Units
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» Measuring Devices And Scales
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» Mechanics (Mass, Force, Acceleration, Work, Energy, Momentum, Velocity)
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» Force Of Gravity, Solids And Fluids
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» Motion Under Gravity
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» Physical Properties Of Materials
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» Light, Heat, Thermodynamics, Wave Motion, Sound, Optics & Oscillations
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» Electric Current And Magnetism
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» Nuclear Physics And Conductivity
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» Modern And Space Physics, Sources Of Energy
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» General Concepts Of Chemistry
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» Nature Of Matter And Composition
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» Atomic Structure Molecules And Nuclear Chemistry
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» Classification Of Elements, Chemical Bonding, Periodicity In Properties & Physical Transformation
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» Metals, Non Metals, Minerals, Ores, Properties, Uses
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» Alloys, Carbon & Its Various Forms, Hydrogen & Compounds, Sulphur, Nitrogen, Halogen & Inert Gases
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» Fuel, Food Preservation, Nutrition, Medicine, Detergents And Fertilizers
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» Inorganic Chemistry
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» Organic Chemistry
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» Environmental Chemistry
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» Some Important Man Made Materials
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» Sub Divisions Of Biology
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» Genetics, Evolution Of Life & Ecological Biodiversity
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» Taxonomy
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» Heredity
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» Photosynthesis
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» Physiology Of Plants, Humans And Animals
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