Understanding Circuit Current and Voltage

Why is the voltage constant in a parallel circuit?

• Because the current is constant in each branch.

• Because each component is connected across the same two points of the circuit.

• Because the resistance is the same in each branch.

• Because the total current is the sum of the currents in all branches.

In a series circuit, why is the current constant?

• Because there are multiple paths for the current to flow through.

• Because the voltage is constant across each component.

• Because there is only one path for the current to flow through.

• Because the resistance is the same in each component.

What happens to the current in a parallel circuit?

• It remains constant in each branch.

• It splits between the branches.

• It decreases as it moves through each branch.

• It increases as it moves through each branch.

How does the resistance of a component in a parallel circuit affect the current through it?

• Lower resistance results in less current.

• Higher resistance results in more current.

• Lower resistance results in more current.

• Resistance does not affect the current.

In a parallel circuit, what is the relationship between the total current and the currents in the branches?

• The total current is the average of the currents in all branches.

• The total current is the difference between the highest and lowest branch currents.

• The total current is the sum of the currents in all branches.

• The total current is the product of the currents in all branches.

If a parallel circuit has three branches with resistances of 2 ohms, 4 ohms, and 6 ohms, which branch will have the highest current?

• The branch with 2 ohms.

• The branch with 4 ohms.

• The branch with 6 ohms.

• All branches will have the same current.

What is the potential difference across each component in a parallel circuit if the supply voltage is 12 volts?

• 0 volts

• 6 volts

• 12 volts

• 24 volts

In a series circuit with a supply voltage of 24 volts and three resistors of equal resistance, what is the voltage across each resistor?

• 4 volts

• 8 volts

• 12 volts

• 24 volts

If the total current in a parallel circuit is 6 amperes and there are three branches with currents of 2 amperes, 1.5 amperes, what is the current in the third branch?

• 1 ampere

• 2 amperes

• 2.5 amperes

• 3 amperes

In a series circuit, if the current is 3 amperes, what is the current through each component?

• 1 ampere

• 2 amperes

• 3 amperes

• 4 amperes