What is the electron drift speed in a typical current-carrying wire? What is the electron drift speed in a typical current-carrying wire? Extremely slow (≈10−4m/s). Moderate ( ≈1m/s). Very fast (≈104m/s). Could be extremely slow, moderate, or very fast Unknown, since no numerical values were provided

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If the force applied to an object remains constant, is more power needed for the object to move faster ? explain

Aresistor with an unknown resistance is connected in parallel to a 9 ω resistor. when both resistors are connected in parallel to an emf source of 21 v, the current through the unknown resistor is measured with an ammeter to be 4 a. what is the resistance of the unknown resistor? answer in units of ω.