Electricity Chapter 12: Electric Circuits and Current Regulation
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Questions and Answers

What is the name of a continuous and closed path of an electric current?

  • Electric circuit (correct)
  • Electric conductor
  • Electric charge
  • Electric switch

In a torch, what makes a conducting link between the cell and the bulb?

  • Electric circuit
  • Electric conductor
  • Switch (correct)
  • Electric charge

How is electric current expressed?

  • By the brightness of the light produced
  • By the amount of charge flowing through a particular area in unit time (correct)
  • By the type of electric conductor used
  • By the temperature rise in the conductor

What happens to the electric current when the circuit is broken or the switch is turned off?

<p>The current stops flowing (B)</p> Signup and view all the answers

What is the unit of electric charge?

<p>Coulomb (C)</p> Signup and view all the answers

Who was the electric current originally thought to be constituted of?

<p>Positively charged particles (B)</p> Signup and view all the answers

What is the unit of electric current?

<p>Ampere (C)</p> Signup and view all the answers

What instrument measures electric current in a circuit?

<p>Ammeter (C)</p> Signup and view all the answers

What is the direction of the electric current in an electric circuit using metallic wires?

<p>Opposite to the direction of the electrons (B)</p> Signup and view all the answers

What constitutes one ampere?

<p>$1$ C per second (B)</p> Signup and view all the answers

What does a switch do in an electric circuit?

<p>Interrupts the flow of electric current (C)</p> Signup and view all the answers

How is electric current expressed?

<p>By the amount of charge flowing through a particular area in unit time (B)</p> Signup and view all the answers

What constitutes the flow of charges in circuits using metallic wires?

<p>Electrons (C)</p> Signup and view all the answers

What was considered to be the direction of electric current when it was first observed?

<p>The direction of flow of positive charges (D)</p> Signup and view all the answers

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