Concept explainers
Your lab partner says that a battery provides not a source of constant current, but a source of constant voltage. Do you agree or disagree, and why?
Whether a battery provides constant current or not.
Explanation of Solution
Introduction:
The electrons need some external force for the movement across the electric circuit. This force is provided by the voltage of the battery.
The negative terminal of the battery pushes the electrons of the circuit towards the positive terminal of the battery due to repulsion between the electrons. This causes the flow of current through the circuit.
The battery provides constant voltage across the circuit. The current in the circuit does not remain constant because of various resistances in the circuit. If the electron passes through the resistance of high value then the flow of the current becomes slow but becomes fast for low resistance.
Conclusion:
The battery provides constant voltage across the circuit but not constant current due to various resistances in the circuit.
Chapter 35 Solutions
Conceptual Physics: The High School Physics Program
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