Q26 of 126 Page 198

Suppose you have three resistors of 20Ω, 50Ω and 100Ω. What minimum and maximum resistances can you obtain from these resistors?

and

Given, resistances , ,


Maximum resistance occurs when the three resistances are connected in series.


hence,



Minimum resistance is when they are parallel to each other.





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Figure shows a part of a circuit. If a current of 12 mA exists in the 5 kΩ resistor, find the currents in the other three resistors. What is the potential difference between the points A and B?