Series and Parallel Circuits
Physics ⇒ Electricity and Magnetism
Series and Parallel Circuits starts at 8 and continues till grade 12.
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Describe the main difference between series and parallel circuits in terms of current and voltage distribution.
Describe what happens to the total resistance of a series circuit if one resistor is removed.
Explain why household electrical appliances are connected in parallel rather than in series.
Explain why the total resistance decreases when more resistors are added in parallel.
If three identical bulbs are connected in parallel to a battery, and one bulb burns out, what happens to the brightness of the remaining bulbs?
State Ohm's Law and explain its application in series and parallel circuits.
A 12 V battery is connected to two resistors, 3 Ω and 6 Ω, in parallel. What is the total current supplied by the battery?
A 24 V battery is connected to four resistors of 4 Ω each in series. What is the current in the circuit?
A 6 V battery is connected to two resistors, 2 Ω and 4 Ω, in series. What is the power dissipated in the 4 Ω resistor?
A circuit has two resistors, 10 Ω and 20 Ω, connected in series to a 30 V battery. What is the voltage drop across the 20 Ω resistor?
Which arrangement is used in household wiring to ensure that each appliance receives the same voltage? (1) Series (2) Parallel (3) Both (4) Neither
Which formula is used to calculate the total resistance (Rtotal) of two resistors R1 and R2 in parallel? (1) R1 + R2 (2) R1 × R2 (3) (R1 × R2)/(R1 + R2) (4) R1 - R2
Which of the following best describes the voltage across each resistor in a series circuit? (1) It is the same for all resistors. (2) It is divided among the resistors according to their resistance. (3) It is always zero. (4) It is equal to the current times the total resistance.
Which of the following is a characteristic of a parallel circuit? (1) The voltage across each branch is the same. (2) The current is the same in all branches. (3) The total resistance is the sum of all resistances. (4) The circuit cannot have more than two branches.
In a parallel circuit, the total resistance is always _______ than the smallest individual resistance.
In a series circuit, the total voltage across all components is equal to the _______ of the individual voltages across each component.
True or False: In a parallel circuit, the failure of one branch affects the operation of the other branches.
True or False: In a series circuit, if one component fails, the entire circuit stops working.
True or False: The total current in a series circuit increases as more resistors are added.
True or False: The total resistance in a series circuit is always greater than the resistance of any individual resistor.
