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 : 2
Consider the following statements regarding a motor car battery:
- The voltage is usually 12 V.
- Electrolyte used is hydrochloric acid.
- Electrodes are lead and copper.
- Capacity is expressed in ampere-hour.
a) 3 and 4
b) 1 and 2
c) 2 and 3
d) 1 and 4
Answer »Answer: (d)
In case of motor car battery or automotive batteries a nominal 12-volt potential difference is provided by connecting six galvanic cells in series. Capacity of these batteries is expressed in ampere-hour.
Electrolyte used is a solution of about 35% sulphuric acid and 65% water and electrodes used are plates of lead and separate plates of lead dioxide.
Question : 3 [IAS (Pre) 1996]
Given below are two statements, one labelled as Assertion (A) and the other labelled as Reason (R).
Assertion (A):
Transformer is useful for stepping up or stepping down voltages.
Reason (R):
Transformer is a device used in D.C. circuits.
In the context of the above two statements, which one of the following is correct?
a) (A) is true, but (R) is false
b) Both (A) and (R) are true and (R) is the correct explanation of (A)
c) Both (A) and (R) are true, but (R) is not the correct explanation of (A)
d) (A) is false, but (R) is true
Answer »Answer: (a)
Question : 4
Faraday’s laws are consequence of conservation of
a) energy and magnetic field
b) charge
c) energy
d) magnetic field
Answer »Answer: (c)
Faraday’s laws are based on the conversion of electrical energy into mechanical energy; which is in accordance with the law of conservation of energy
Question : 5
According to international convention of colour coding in a wire
a) live is red, neutral is green and earth is black
b) live is brown, neutral is blue and earth is black
c) live is red, neutral is black and earth is green
d) live is red, neutral is black and earth is green
Answer »Answer: (d)
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set 8 Online Quiz
Click to Start..general science mcq CATEGORIES
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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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» Acids, Bases, Salts And Metals
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» Hydrocarbon, Alcohol, Polymer, Organic Acid And Explosive Substance
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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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» 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
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» Reproduction
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» Genetic Engineering And Bio Technology
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