Understanding Series Circuits

What is the main characteristic of a series circuit compared to a parallel circuit?

• It has a variable voltage source.

• It has no resistors.

• It has a single pathway for charge.

• It has multiple pathways for charge.

What happens to the total resistance and current when more resistors are added in series?

• Resistance increases, current decreases.

• Resistance increases, current increases.

• Resistance decreases, current decreases.

• Resistance decreases, current increases.

How do you calculate the equivalent resistance in a series circuit?

• By multiplying the resistances.

• By adding the resistances.

• By dividing the resistances.

• By subtracting the resistances.

In a series circuit, how is the current through each resistor related?

• It doubles with each resistor.

• It varies with each resistor.

• It is the same through each resistor.

• It is zero through each resistor.

What is the formula used to calculate the voltage drop across a resistor in a series circuit?

• V = R / I

• V = I + R

• V = I * R

• V = I / R

If a 12V battery powers two 3 ohm resistors in series, what is the current in the circuit?

• 4 amps

• 3 amps

• 2 amps

• 1 amp

What adjustment can increase the current in a series circuit with three identical bulbs?

• Decrease the battery voltage.

• Remove one bulb from the circuit.

• Decrease the resistance of two bulbs.

• Increase the resistance of one bulb.

Which statement is false regarding voltage drop in a series circuit with identical bulbs?

• Voltage drop across two bulbs is greater than one bulb.

• Voltage drop across all bulbs equals the battery voltage.

• Voltage drop across two bulbs is less than one bulb.

• Voltage drop across two bulbs is equal to another two bulbs.

What is the electric potential at the negative terminal of a battery in a series circuit?

• Half of the battery voltage.

• Equal to the battery voltage.

• Zero volts.

• Double the battery voltage.

In a series circuit, what happens to the electric potential as charge moves through a resistor?

• It doubles.

• It decreases.

• It remains constant.

• It increases.