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| 1 | |
Ellie purchased a cordless drill, and found that the new quick-charge battery took 50 minutes to charge from 0% to 100%. Find the rate of change of the charge. |
| | A) | 2%/min |
| | B) | 2 min/% |
| | C) | 50%/min |
| | D) | 50 min/% |
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| 2 | |
Ellie graphed the charge in relation to the time. Which graph is correct? |
| | A) |  <![CDATA[<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=jpg::::/sites/dl/free/0070973199/362683/pom9_ch5_sec4_quiz1_ques2a.jpg','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (44.0K)</a>]]> |
| | B) |  <![CDATA[<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=jpg::::/sites/dl/free/0070973199/362683/pom9_ch5_sec4_quiz1_ques2b.jpg','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (46.0K)</a>]]> |
| | C) |  <![CDATA[<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=jpg::::/sites/dl/free/0070973199/362683/pom9_ch5_sec4_quiz1_ques2c.jpg','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (45.0K)</a>]]> |
| | D) |  <![CDATA[<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=jpg::::/sites/dl/free/0070973199/362683/pom9_ch5_sec4_quiz1_ques2d.jpg','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (45.0K)</a>]]> |
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| 3 | |
How does the rate of change of the charge relate to the graph? |
| | A) | The rate of change equals the rise of the graph. |
| | B) | The rate of change of charge equals the run of the graph. |
| | C) | The rate of change of charge equals the slope of the graph. |
| | D) | The rate of change of charge bears no relation to the graph. |
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| 4 | |
Ellie drained the battery using the drill, and placed it on the charger for 30 minutes. How much charge would the battery gain in this time? |
| | A) | 90% |
| | B) | 60% |
| | C) | 50% |
| | D) | 30% |
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| 5 | |
How long would it take to charge the battery from 0% to 90%? |
| | A) | 30 min |
| | B) | 35 min |
| | C) | 40 min |
| | D) | 45 min |
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