Mr. Lamothe's Special
Math and Science Assignment
Voltage Use with Electronic Equipment
Description of Problem
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We are going
to be using electronic equipment run off of batter power. One measure
of battery power potential energy is VOLTAGE running what is called DC,
Direct Current electricty. Many electronic devices are engineered to run
on plus or minus 20% of 12 VOLTS
or whatever voltage they are rated for. 1. In the first case we are going to be running an amplifier for a microphone off of a 12 volt battery. 2. In the second case we are going to be running a wireless microphone that uses 1.25 volt AA batteries. |
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QUESTION 1 Our task is to determine what voltage is minus 20% of 12 volts and what voltage is plus 12 volts. Question 1 Answer for MINUS 20% 12 volts: _________ Question 1 Answer for PLUS 20% of 12 volts: _________ |
Below is Another Voltage Meter
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QUESTION 2 Our task is to determine what voltage is minus 20% of 1.25 volts and what voltage is plus 1.25 volts.
Answer for MINUS 20% 1.25 volts: _________
Answer for PLUS 20% of 1.25 volts:
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| Question 3 Additional Challenge |
Question 3 Your challenge is to be able to determine the answer using only ONE mathematical step. For example, if you use subtraction or multiplication to determine your answer, you MAY NOT use another mathematical process to determine you answer. In other words, you cannot add, multiply, or substract more than once. Write your mathematical formula Below. Formula for Minus 20% of 12 Volts: _________________________ Answer for Minus 20% of 12 Volts: ____________
Formula for Plus 20% of 12 Volts: _______________________ Answer for Plus 20% of 12 Volts: ______________
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