To calculate Volts, one must multiply current (Amps/Amperes)times resistance (Ohms/Ω). For example, 12.34 Amps multiplied by3.64 Ohms gives the Volts one might measure with a voltmeter.Calculate the voltage for 12.34 Amps and 3.64 Ohms. DONOT ROUND THE RESULT
Now, calculate the voltage again, using the ROUNDED results forcurrent and resistance from the previous questions.
i.e. use 12.34 Amps rounded to TWO sig figs and 3.64 Ohmsrounded to TWO sig figs to calculate the voltage. DONOT ROUND THE RESULT
Percent error, or percent difference, is defined as the ratio ofthe difference between two results versus the expected result. Ifpercent difference in this case is the difference between thevoltages calculated with rounded and un-rounded numbers, divided bythe voltage using un-rounded numbers, multiplied by 100, what isthe percent difference?
e.g. [#7 result - #8 result] / #7 result * 100 = ? DO NOTROUND YOUR RESULT
Now, imagine you need to find the power in the circuit, which isV2/R, where 'R' is resistance. What would be the voltagesquared using the un-rounded voltage found in question7. DO NOT ROUND YOUR RESULT
i.e. (#7 result)*(#7 result)
Perform the previous question's calculation again, using therounded voltage. DO NOT ROUND YOUR RESULT
To calculate Volts, one must multiply current (Amps/Amperes) times resistance (Ohms/Ω). For example, 12.34 Amps multipli
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