Final answer:
The current does not change as it passes through a resistor; it remains constant. This is consistent with Ohm's Law, V = IR, where V is the voltage drop, I is the current, and R is the resistance.
The analogy compares the voltage source to a pump and the resistor to a pipe causing a pressure drop.
the answer is c) No, current remains constant.
Step-by-step explanation:
The IR drop across a resistor signifies a change in potential or voltage across the resistor. When asking if there is any change in current as it passes through a resistor,
the answer is c) No, current remains constant. According to Ohm's Law, which states V = IR, the voltage drop (V) across a resistor is the product of the current (I) flowing through the resistor and its resistance (R).
The current in a circuit remains constant as it passes through a resistor, although the voltage drops. This is because the electrical current is the flow of charge, and in a closed circuit, the amount of charge that enters one end of the resistor also leaves the other end.
The IR drop in a resistor is analogous to a pressure drop in a fluid flowing through a pipe. A voltage source in a circuit can be likened to a pump in fluid dynamics, creating a pressure difference that drives the flow of charge or current.
A resistor acts akin to a constriction in a pipe that causes a pressure drop, but does not change the volume of water flowing through the system; similarly, the resistor causes a voltage drop without affecting the flow of current through a circuit.