 Ask Remember Me? raunak07 Posts: 1, Reputation: 1 New Member #1 Mar 18, 2017, 02:58 PM
Resistor math word problem
Resistors are components found on most circuit boards and in most electronic devices. Since resistors do not come in every size, they have to be arranged in various ways to get the needed resistance. When three resistors are in parallel, then the total resistance, RT , can be calculated using the equation 1/RT = 1/R1 = 1/R2 = 1/R3 , where each of the resistances is in ohms.
a) Determine an expression for the total resistance, RT .
b) Determine an expression for the total resistance if R1 = R2 = R3 .
c) Determine an expression for the total resistance if R1 = 2R2 = 6R3 . ma0641 Posts: 15,681, Reputation: 1012 Uber Member #2 Mar 19, 2017, 05:32 AM
First understand the difference between series and parallel resistance. What would be the total resistance of 2 x10 ohm resistors in series vs. parallel? Learn the formula and the question you asked is easy. ebaines Posts: 12,132, Reputation: 1307 Expert #3 Mar 20, 2017, 05:37 AM Originally Posted by raunak07
using the equation 1/RT = 1/R1 = 1/R2 = 1/R3 ,
Your formula is incorrect. This should be: 1/RT = 1/R1 + 1/R2 + 1/R3

Please try to solve the three parts of this question and post back with your attempt. We'll help you along if you get stuck.

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