How does the inverse law apply to electrostatic forces?
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Ответ:
Resistor
Explanation:
A voltmeter is a device that is used measure potential difference across a component in a circuit. Voltmeter is attached in parallel connection with the component and has high resistance so that it does not draw any current and alter the measurement of potential difference. Thus, it does not use current to operate.
A switch is a device that completes or breaks the circuit. when open, the gap acts like infinite resistor and no current passes. With switch closed, the circuit is complete and current flows through the circuit. Thus, it does not use current to operate.
A battery is a device that provides electric current. It converts chemical energy into electrical energy. Thus, it supplies electric charges to flow in a circuit and no uses current to operate.
Resistor is a passive component of a circuit. A resistor is used to reduce the flow of current. A resistor is significant in a circuit only when there is current flowing. Hence, we can say that Resistor uses current.