Which of the following statements is not true about measuring the resistance of a component that
is connected in a circuit?
1. Turn off the power supply.
2. Disconnect one of the component leads from the circuit.
3. Make sure the power supply is on.
4. Connect the leads across the component.
Answers: 2
Physics, 22.06.2019 19:50
The heater element of a 120 v toaster is a 5.4 m length of nichrome wire, whose diameter is 0.48 mm. the resistivity of nichrome at the operating temperature of the toaster is 1.3 × 10-6 ω·m. the toaster is operated at a voltage of 120 v. (a) what is the power drawn by the toaster? (b) if the cost of electricity is 12 ¢ per kilowatt-hour, and it takes 2 minutes to toast bread, how much does it cost for toasted bread? (c) when the heater element is at room temperature, is the resistivity in the nichrome wire greater than, less than, or equal to it’s resistivity when at operating temperature? explain.
Answers: 3
Physics, 23.06.2019 02:00
Which of the following is the largest disadvantage of about half of the electricity in the united states comes from burning
Answers: 2
Physics, 23.06.2019 17:00
A70 kg person standing in an elevator is accelerated upwards at a rate of 2.5 m/s2. what is the force of the elevator on the person? 770 n 250 n 875 n -525 n
Answers: 1
Physics, 23.06.2019 22:20
Imagine an alternate universe where the value of the planck constant is . in that universe, which of the following objects would require quantum mechanics to describe, that is, would show both particle and wave properties? which objects would act like everyday objects, and be adequately described by classical mechanics?
Answers: 2
Which of the following statements is not true about measuring the resistance of a component that
i...
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