Asked by Aimee
Amy needs 5.0 V for some integrated circuit experiments. She uses a 7.5 V battery and two resistors to make a voltage divider. One resistor is 310 . She decides to make the other resistor smaller. What value should it have?
Answers
Answered by
Steve
She wants 2/3 the voltage across one resistor (the larger), and 1/3 across the smaller.
So, the smaller must be 1/2 the larger, since V=IR and the same current flows through both resistors.
So, the smaller must be 1/2 the larger, since V=IR and the same current flows through both resistors.
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