Final answer:
In a circuit, the current does not decrease after passing through a resistor, but the voltage across the resistor does. This follows from Ohm's law, which states that the potential drop across a resistor is the product of the current and the resistor's resistance.
Step-by-step explanation:
The question seems to be about the behavior of current and voltage when they encounter a resistor in a circuit. According to Ohm's law, which states that Voltage (V) = Current (I) × Resistance (R), the current does not decrease after passing through a resistor; instead, it's the voltage across the resistor that decreases.
This potential drop is equal to the product of the current going through the resistor and the resistor's resistance (Vresistor = IR), where current is the same throughout a series circuit. Consequently, when the voltage source applies a voltage to the circuit, the potential drop across each resistor essentially subtracts from the voltage coming from the source, resulting in a lower voltage after each resistor but the same current flow.
The current does not decrease after passing through a resistor, but the voltage does decrease. According to Ohm's law, the current through a resistor is directly proportional to the voltage across it, and inversely proportional to the resistance. So, if the resistance of the resistor remains constant, and the voltage decreases, the current will also decrease.