Gr 9 NATURAL SCIENCES: CH 3.4 Series and Parallel Circuits
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Questions and Answers

What is a key feature of a parallel circuit?

  • Only one path for electric current
  • More than one path for electric current (correct)
  • All components are connected in series
  • The power source is divided among components

What happens to the overall potential difference when cells are connected in parallel?

  • It decreases by the number of cells
  • It remains the same as the potential difference of a single cell (correct)
  • It increases by the number of cells
  • It becomes zero

What is an advantage of connecting cells in parallel?

  • Increased potential difference
  • Decreased battery life
  • Variable voltage
  • Increased battery life (correct)

What happens to the total resistance when resistors are added in parallel?

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

Why does the total resistance decrease when resistors are added in parallel?

<p>More pathways for current to flow (B)</p> Signup and view all the answers

What is a result of having more pathways for current to flow in a parallel circuit?

<p>More current flows through the circuit (B)</p> Signup and view all the answers

What is an analogy for resistors in parallel?

<p>A multi-lane highway (B)</p> Signup and view all the answers

What happens when one cell is depleted in a parallel circuit?

<p>The voltage across the circuit remains constant (D)</p> Signup and view all the answers

Why is it easier for current to move through a parallel circuit?

<p>More pathways for current to flow (A)</p> Signup and view all the answers

What is a benefit of connecting components in parallel?

<p>Stable voltage (A)</p> Signup and view all the answers

What is a characteristic of a component in a parallel circuit?

<p>It has its own separate path to the power source. (C)</p> Signup and view all the answers

What is the effect of connecting cells in parallel on the overall potential difference?

<p>It remains the same as the potential difference of a single cell. (D)</p> Signup and view all the answers

What is the purpose of adding resistors in parallel?

<p>To provide more alternative pathways for the current. (A)</p> Signup and view all the answers

What happens to the total resistance when a second resistor is added in parallel?

<p>It decreases, making it easier for current to flow. (A)</p> Signup and view all the answers

What is the advantage of having multiple paths for current to flow in a parallel circuit?

<p>It increases the overall efficiency of the circuit. (D)</p> Signup and view all the answers

What is the result of connecting components in parallel?

<p>Each component has its own separate path to the power source. (C)</p> Signup and view all the answers

What is the effect of connecting multiple cells in parallel on the battery life?

<p>It increases the battery life. (A)</p> Signup and view all the answers

What happens to the current when a second resistor is added in parallel?

<p>It increases, making it easier for current to flow. (A)</p> Signup and view all the answers

What is a benefit of having multiple pathways for current to flow in a parallel circuit?

<p>It makes the circuit more reliable. (C)</p> Signup and view all the answers

What is the result of having more pathways for current to flow in a parallel circuit?

<p>It makes the circuit more efficient. (B)</p> Signup and view all the answers

In a parallel circuit, what is the main reason why each component has its own separate path to the power source?

<p>To provide more than one path for electric current to move through the circuit (B)</p> Signup and view all the answers

What is the effect of connecting multiple cells in parallel on the voltage across the circuit?

<p>The voltage remains constant (B)</p> Signup and view all the answers

What happens to the total current when resistors are added in parallel?

<p>It increases (D)</p> Signup and view all the answers

Why is it beneficial to connect cells in parallel?

<p>It increases the battery life and provides a stable voltage (B)</p> Signup and view all the answers

What is an implication of adding more pathways for current to flow in a parallel circuit?

<p>It is easier for current to move through the circuit (B)</p> Signup and view all the answers

What is a result of having multiple components connected in parallel?

<p>The circuit becomes more reliable (A)</p> Signup and view all the answers

What is the main advantage of connecting resistors in parallel?

<p>It makes it easier for current to move through the circuit (B)</p> Signup and view all the answers

What happens when one cell is depleted in a parallel circuit?

<p>The overall potential difference remains the same (A)</p> Signup and view all the answers

What is an implication of having more than one path for electric current to move through a parallel circuit?

<p>It is easier for current to move through the circuit and the total resistance decreases (D)</p> Signup and view all the answers

What is a characteristic of a circuit with multiple components connected in parallel?

<p>The circuit provides more than one path for electric current to move through (A)</p> Signup and view all the answers

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