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WorksheetsElectricity #15
Total questions: 10
Worksheet time: 5mins
Which one of the following describes the direction of an electric current?
Opposite to the direction of flow of electrons.
In the direction of flow of electrons.
In the direction of flow of protons.
Opposite to the direction of flow of protons.
Consider the following pairs:
A). SI unit of electric charge – Ampere (A)
B). SI unit of electric current – Coulomb (C)
C). Instrument for measuring electric current in a circuit – Ammeter
Which of the pairs given above is/are correctly matched?
A only
B and C only
A and C only
C only
Which of the following energies is converted into electrical energy by cells for maintaining current in a circuit?
Mechanical energy
Solar energy
Chemical energy
Magnetic energy
Which of the following laws states that- the electric current flowing through a metallic wire is directly proportional to the potential difference V, across its ends, provided its temperature remains the same?
Faraday's law
Charles’s law
Ohm’s law
Fleming's law
If the resistance is doubled, then current gets–
doubled
halved
four times
eight times
Resistance of a conductor depends upon which of the following factors:
1.On its length
2.On its area of cross-section
3.On the nature of its material
Which of the statements given above is/are correct?
1 only
1 and 3 only
2 and 3 only
1, 2, and 3
Which of the following metals is used in filaments of electric bulbs?
Chromium
Tungsten
Copper
Silver
Which of the following arrangements is used for domestic circuits?
Series
Parallel
Both (a) and (b)
None of the above
Which of the following inorganic gases are filled in bulbs?
1.Nitrogen
2.Helium
3.Argon
4.Hydrogen
1 and 3 only
1 and 4 only
3 and 4 only
2 and 3 only
What will happen to the power input if the electric current and potential difference of a wire gets doubled–
Gets doubled
Gets four times
Gets halved
No affect caused
