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#34729

equations

formulas

hard

90 sec

In a parallel circuit, the total resistance $R_{T}$ is related to the individual resistances $R_{1}$ and $R_{2}$ by the formula $\frac{1}{R _{T}} = \frac{1}{R _{1}} + \frac{1}{R _{2}}$ . If $R_{T} = 6$ ohms and $R_{2} = 10$ ohms, what is the value of $R_{1}$ ?

• Up to 5 characters (6 if negative). Only numbers, decimal (.), fraction (/), negative (-).
• Fractions must be in lowest terms.
• Mixed numbers must be converted to improper fractions.