Understanding Series and Parallel Circuits

In a series circuit, how does the current at different points in the circuit compare?

• The current increases as it moves through each component

• The current is the same at all points

• The current decreases as it moves through each component

• The current is zero at the last component

What happens to the total voltage in a series circuit?

• It is the same as the voltage across each component

• It is the sum of the voltages across each component

• It is always zero

• It is divided equally regardless of resistance

In a parallel circuit, how does the voltage across each branch compare?

• It is different for each branch

• It is the same for each branch

• It is always zero

• It depends on the current

How is the total current in a parallel circuit calculated?

• By adding the currents in each branch

• By dividing the total voltage by the number of branches

• By multiplying the current in one branch by the number of branches

• By subtracting the smallest current from the largest

If three resistors are connected in series to a 12 V battery, and each resistor has a voltage drop of 4 V, what is the total voltage across the circuit?

• 4 V

• 8 V

• 12 V

• 16 V

In a series circuit, if one component fails (e.g., a globe blows), what happens to the rest of the circuit?

• The rest of the circuit continues to work

• The entire circuit stops working

• Only the failed component stops working

• The current increases

Which statement is true about current in a parallel circuit?

• The current is the same in all branches

• The current splits between the branches

• The current is always zero

• The current only flows in one branch

If two identical resistors are connected in parallel to a 6 V battery, what is the voltage across each resistor?

• 3 V

• 6 V

• 12 V

• 0 V

What is the main advantage of using a parallel circuit in household wiring?

• If one appliance fails, the others keep working

• It saves more energy

• It is easier to build

• It uses less wire

In a series circuit, if the resistance increases, what happens to the current?

• It increases

• It decreases

• It stays the same

• It becomes zero