Series and parallel circuits: Practice Questions

• a.

  The potential difference across each component is always zero.

• b.

  The potential difference increases as the current flows through more components.

• c.

  The potential difference across each component is the same as the power supply.

• d.

  The total potential difference of the power supply is shared between the components.

• a.

  It increases the total potential difference of the power supply.

• b.

  It reduces the amount of charge flowing per second from the source.

• c.

  It provides an additional pathway for the electric current to flow through.

• d.

  The resistors in parallel are added together using \(R_{total} = R_1 + R_2\).

• a.It provides an additional pathway for the current to flow
• b.It reduces the current flowing from the power source
• c.It causes the resistors to share the potential difference
• d.It increases the total potential difference of the circuit

• a.The current is exactly the same in both resistors.
• b.The current is higher in the resistor closer to the positive terminal.
• c.The current is higher in the resistor closer to the negative terminal.
• d.The current is split equally between the two resistors.

• a.\(300\text{ }\Omega\)
• b.\(7.5\text{ }\Omega\)
• c.\(40\text{ }\Omega\)
• d.\(20\text{ }\Omega\)

Write your answer out first, then check it against the worked solution.

Write your answer out first, then check it against the worked solution.