4b Electrical Circuit Quiz A level Edexcel

What is internal resistance in an electrical circuit?

• The resistance of the external components

• The resistance within the source of electrical energy

• The resistance at the terminals of a resistor

• The resistance across the load

A rheostat is used primarily for:

• Measuring resistance in a circuit

• Regulating current by changing resistance

• Measuring voltage across a component

• Controlling the internal resistance of a battery

What is the primary function of a potentiometer?

• Measuring electric current

• Controlling resistance in a circuit

• Measuring potential difference accurately

• Generating electrical energy

Terminal potential of a battery refers to:

• The potential difference between the positive and negative terminals

• The potential difference across the load resistor

• The potential difference across the internal resistance of the battery

• The potential difference across all components in the circuit

What does a potential divider circuit do?

• Divides the total current in a circuit

• Divides the total voltage in a circuit

• Maintains constant voltage across components

• Converts electrical energy into mechanical energy

When calculating voltage and current in parallel, one should consider that:

• The voltage is the same across all components, but the current varies

• The voltage varies across each component, but the current is the same

• Both voltage and current are the same across all components

• Both voltage and current vary across each component

When calculating voltage and current in series:

• The voltage is the same across all components, but the current varies

• The voltage varies across each component, but the current is the same

• Both voltage and current are the same across all components

• Both voltage and current vary across each component

According to Kirchhoff's junction rule:

• The total current entering a junction equals the total current leaving it

• The total voltage around a closed loop is zero

• The potential difference across a resistor is directly proportional to the current passing through it

• The total resistance in a parallel circuit is equal to the sum of individual resistances

The electrical voltage loop rule states that:

• The total voltage in a circuit is equal to the total current times the total resistance

• The total voltage in a circuit is equal to the sum of voltage drops across components

• The total voltage across a parallel circuit is equal to the voltage across each component

• The total voltage across a series circuit is equal to the voltage across each component

Which of the following best defines electromotive force (EMF)?

• The potential difference across a resistor

• The energy lost as heat in a circuit

• The energy per unit charge supplied by a source

• The total potential difference in a closed circuit