- parallel combination of resistors and its applications in daily life
Resistors in parallel:
When resistors are joined in parallel, the reciprocal of total resistance of the system is equal to the sum of reciprocal of the resistance of resistors.
If total resistance = R
Resistance of resistors are R1,R2,R3,.....Rn.
Therefore R= `1/("R"1)+1/("R"2)+1/("R"3).....1/("Rn")`
In parallel the Current (I) varies and voltage (V) remains the same.
Shaalaa.com | Electricity part 8 (Resistor Parallel & series)
Three resistors each of 2Ω are connected together so that their total resistance is 3Ω. Draw a diagram to show this arrangement and check it by calculation.
You have three resistors of values 2Ω, 3Ω and 5Ω. How will you join them so that the total resistance is less than 1Ω? Draw diagram and find the total resistance.
A combination consists of three resistors in series. Four similar sets are connected in parallel. If the resistance of each resistor is 2 ohm, find the resistance of the combination.
Calculate the equivalent resistance of the following combination of resistors r1, r2, r3 and r4 if `r_1=r_2=r_3=r_4=2.0Ω ` between the points A and B in Fig. 8.42
Two resistors having resistance 4𝛀 and 6𝛀 are connected in parallel. Find their equivalent resistance.
What is the equivalent resistance of 5 equal resistors, each of value 2`Omega` 1 when oonnected in (a) Series ( b) ParaIleI?