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Questions and Answers
Calculate the number of electrons constituting one coulomb of charge.
Calculate the number of electrons constituting one coulomb of charge.
The number of electrons constituting one coulomb of charge is $6.25 \times 10^{18}$ electrons.
What is the unit of current and how is it defined?
What is the unit of current and how is it defined?
The unit of current is ampere. Ampere is defined by the flow of one coulomb of charge per second.
Name a device that helps to maintain a potential difference across a conductor.
Name a device that helps to maintain a potential difference across a conductor.
A battery and cell help to maintain a potential difference across a conductor.
What is meant by saying that the potential difference between two points is 1 V?
What is meant by saying that the potential difference between two points is 1 V?
What does an electric circuit mean?
What does an electric circuit mean?
Explain the reactivity order of metals A, B, C, and D as mentioned in the text.
Explain the reactivity order of metals A, B, C, and D as mentioned in the text.
What gas is produced when dilute hydrochloric acid is added to a reactive metal?
What gas is produced when dilute hydrochloric acid is added to a reactive metal?
What happens when zinc is added to a solution of iron (II) sulphate?
What happens when zinc is added to a solution of iron (II) sulphate?
Write the electron-dot structures for sodium, oxygen, and magnesium.
Write the electron-dot structures for sodium, oxygen, and magnesium.
Show the formation of Na2O and MgO by the transfer of electrons.
Show the formation of Na2O and MgO by the transfer of electrons.
