Sagot :
Solution:
[tex]R_{T} = \dfrac{R_{1}R_{2}}{R_{1} + R_{2}}[/tex]
[tex]R_{T} = \dfrac{(40 \: ohm)(20 \: ohm)}{40 \: ohm + 20 \: ohm}[/tex]
[tex]\boxed{R_{T} = 13.33 \: ohm}[/tex]
[tex]\\[/tex]
#CarryOnLearning
[tex]R_{T} = \dfrac{R_{1}R_{2}}{R_{1} + R_{2}}[/tex]
[tex]R_{T} = \dfrac{(40 \: ohm)(20 \: ohm)}{40 \: ohm + 20 \: ohm}[/tex]
[tex]\boxed{R_{T} = 13.33 \: ohm}[/tex]
[tex]\\[/tex]
#CarryOnLearning