1) In your own words, define each of the following electrical terms: a) charge b) current...
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1) In your own words, define each of the following electrical terms: a) charge b) current c) voltage 2) A 12 volt car battery provides 140 amps of current to a starting motor when the ignition switch is turned on. Suppose the switch is turned on for 2 seconds. a) How much total charge flows through the starting motor? b) How much total energy is supplied to the starting motor? c) While the ignition switch is on, how much power is supplied to the starting motor? d) What element in the circuit provides the power to the starting motor when the ignition switch is on? Switch (simplified) Automotive Battery 140 amps when switch is Starting Motor 12 volts closed 3) Suppose that point b has a potential of +5 volts relative to point a. How much energy is required to move a 3 coulomb charge from point a to point b? 4) Explain conceptually why power can be expressed as p(i)-Ven. (You don't need to explain the passive sign convention - rather explain the physical relationship between voltage, current, and power). 5) For each of the following cases (shown on next page), determine the power transferred between the element (or component) and the remainder of the circuit, and state whether that power was absorbed by the element or delivered by the element. 1) In your own words, define each of the following electrical terms: a) charge b) current c) voltage 2) A 12 volt car battery provides 140 amps of current to a starting motor when the ignition switch is turned on. Suppose the switch is turned on for 2 seconds. a) How much total charge flows through the starting motor? b) How much total energy is supplied to the starting motor? c) While the ignition switch is on, how much power is supplied to the starting motor? d) What element in the circuit provides the power to the starting motor when the ignition switch is on? Switch (simplified) Automotive Battery 140 amps when switch is Starting Motor 12 volts closed 3) Suppose that point b has a potential of +5 volts relative to point a. How much energy is required to move a 3 coulomb charge from point a to point b? 4) Explain conceptually why power can be expressed as p(i)-Ven. (You don't need to explain the passive sign convention - rather explain the physical relationship between voltage, current, and power). 5) For each of the following cases (shown on next page), determine the power transferred between the element (or component) and the remainder of the circuit, and state whether that power was absorbed by the element or delivered by the element.
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Cost Management Measuring Monitoring and Motivating Performance
ISBN: 978-0470769423
2nd edition
Authors: Leslie G. Eldenburg, Susan K. Wolcott
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