Which of the following quantities remain the same in/across the resistors connected in series combination?
Correct answer: C. Both; charge flow and current
- A. Charge flow
- B. Current
- C. Both; charge flow and current
- D. Voltage
Explanation
Option A: The charge flow is also the same at all points in a series circuit. This is because the charge cannot accumulate anywhere in the circuit, so the same amount of charge must flow through each resistor. Option B: The current is the same at all points in a series circuit. This is because the current is the flow of charge, and the charge cannot accumulate anywhere in the circuit. The current is equal to the voltage divided by the resistance, so the current will be the same in all resistors in a series circuit. Option C: The answer is both current and charge flow. In a series circuit, the current and charge flow is the same at all points in the circuit. This is because the current is the flow of charge, and the charge cannot accumulate anywhere in the circuit.Option D: The voltage across each resistor is different, because the resistors have different resistances. The voltage is equal to the current times the resistance, so the resistor with the highest resistance will have the highest voltage across it.
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Steady current relates charge flow to potential difference, resistance and resistivity, including how temperature changes a conductor's resistance. Sources with internal resistance have terminal voltage below their emf when delivering current, and maximum power output occurs under a specific load condition rather than at zero resistance.
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