9. In a circuit with a 12 volt supply and 40 resistance, the power consumed is 10. What is the unit of electrical power? A. Watt. B. Ampere. C. Ohm. D. Volt. 11. What is the electric power supplied by the battery shown in figure 01? A. 24 W B. 48 W C. 0.5 W D. 12 W 24V 150 figure 01 330 watts.

9. In a circuit with a 12 volt supply and 40 resistance, the power consumed is 10. What is the unit of electrical power? A. Watt. B. Ampere. C. Ohm. D. Volt. 11. What is the electric power supplied by the battery shown in figure 01? A. 24 W B. 48 W C. 0.5 W D. 12 W 24V 150 figure 01 330 watts.

Delmar's Standard Textbook Of Electricity

7th Edition

ISBN:9781337900348

Author:Stephen L. Herman

Publisher:Stephen L. Herman

Chapter25: Surge, Spike, And Lightning Protection

Section: Chapter Questions

Problem 1RQ: Describe the difference between a voltage surge and a voltage spike.

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Concept explainers

Power Measurement

According to Blondel's theorem, the total power is measured with one less number of wattmeters than the number of wires present in the system. So, a single-phase and two-wire system will require one wattmeter and a single-phase and the three-wire system will require two wattmeters, and a three-phase and the three-wire system will also require two wattmeters and a three-phase and the four-wire system will require three wattmeter devices. The wattmeter is a device that measures power using one voltage and one current input as shown in the above figure. Multiple current or voltage input pair cables are used by many power analyzers and digital storage oscilloscopes (DSOs) for measuring watts, in effect within a single instrument acting as multiple wattmeters. It is possible to measure three-phase and four-wire power with one correctly specified power analyzer.

Question

9. In a circuit with a 12 volt supply and 4 resistance, the power consumed is
10. What is the unit of electrical power?
A. Watt.
B. Ampere.
C. Ohm.
D. Volt.
11. What is the electric power supplied by the battery shown in figure 01?
A. 24 W
⠀⠀
B. 48 W
C. 0.5 W
D. 12 W
24V-
150
figure 01
330
watts.

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