Why is a vacuum tube called a valve in electr | vedclass

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(A) vacuum tube is called a valve because it controls the flow of electrons in a circuit in a manner similar to how a mechanical valve controls the fl

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It regulates the flow of electrons like a valve regulates the flow of fluid.

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(A) vacuum tube is called a valve because it controls the flow of electrons in a circuit in a manner similar to how a mechanical valve controls the flow of water or gas in a pipe. By varying the potential on the control grid,the tube can allow,restrict,or completely block the flow of electrons from the cathode to the anode,effectively acting as a one-way gate or regulator for electric current.

Why is a vacuum tube called a valve in electronics?

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