Electricity and Circuits Quiz

The number of electrons constituting one coulomb of charge is $6.25 \times 10^{18}$ electrons.

The unit of current is ampere. Ampere is defined by the flow of one coulomb of charge per second.

A battery and cell help to maintain a potential difference across a conductor.

<p>When 1 J of work is done to move a charge of 1 C from one point to another, it is said that the potential difference between the two points is 1 V.</p> Signup and view all the answers

<p>A continuous closed path made of electric components through which an electric current flows is known as an electric circuit.</p> Signup and view all the answers

<p>The reactivity order of metals A, B, C, and D is B &gt; A &gt; C &gt; D.</p> Signup and view all the answers

<p>Hydrogen gas is produced when dilute hydrochloric acid is added to a reactive metal.</p> Signup and view all the answers

<p>Zinc displaces iron from its salt solution, resulting in the color of ferrous sulphate changing from light green to colorless.</p> Signup and view all the answers

<p>The electron-dot structures for sodium, oxygen, and magnesium are not provided in the text.</p> Signup and view all the answers

<p>The formation of Na2O and MgO by the transfer of electrons is not provided in the text.</p> Signup and view all the answers