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 : 2 [UPPCS (Pre) 2007]
In a three-pin electrical plug longest pin should be connected to
a) Neutral terminal
b) Ground terminal
c) Live terminal
d) Any terminal
Answer »Answer: (b)
Question : 3
Whenever, current is changed in a coil, an induced e.m.f. is produced in the same coil. This property of the coil is due to
a) self induction
b) eddy currents
c) mutual induction
d) hysteresis
Answer »Answer: (a)
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
Question : 5
Demagnetisation of magnets can be done by
a) magnetising in the opposite direction
b) rough handling
c) heating
d) All of the above
Answer »Answer: (d)
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general science mcq CATEGORIES
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» Measurement And SI Units
-
» Measuring Devices And Scales
-
» Mechanics (Mass, Force, Acceleration, Work, Energy, Momentum, Velocity)
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» Force Of Gravity, Solids And Fluids
-
» Motion Under Gravity
-
» Physical Properties Of Materials
-
» Light, Heat, Thermodynamics, Wave Motion, Sound, Optics & Oscillations
-
» Electric Current And Magnetism
-
» Nuclear Physics And Conductivity
-
» Modern And Space Physics, Sources Of Energy
-
» General Concepts Of Chemistry
-
» Nature Of Matter And Composition
-
» Atomic Structure Molecules And Nuclear Chemistry
-
» Classification Of Elements, Chemical Bonding, Periodicity In Properties & Physical Transformation
-
» 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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» Acids, Bases, Salts And Metals
-
» Hydrocarbon, Alcohol, Polymer, Organic Acid And Explosive Substance
-
» Fuel, Food Preservation, Nutrition, Medicine, Detergents And Fertilizers
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» Inorganic Chemistry
-
» Organic Chemistry
-
» Environmental Chemistry
-
» 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
-
» Biofertilizer
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» Biological Classification Cell Tissues And Division
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» Human Anatomy
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» Blood Transport System
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» Digestion And Excretion
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» Photosynthesis
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» Vitamins, Nutrition, Health, Disease And Treatment
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» Endocrine Glands, Hormones
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» Physiology Of Plants, Humans And Animals
-
» Reproduction
-
» Genetic Engineering And Bio Technology
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