Combine three resistors 5- 4-5- and 3- in such a way that the total resistance of this combination is maximum-

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Combination of Resistors

Combine three...

Question

Combine three resistors $5 Ω, 4.5 Ω$ and $3 Ω$ in such a way that the total resistance of this combination is maximum:

12.5 Ω

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13.5 Ω

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14.5 Ω

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16.5 Ω

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Solution

The correct option is B $12.5 Ω$
Given resistance,
$R_{1} = 5 Ω R_{2} = 4.5 Ω R_{1} = 3 Ω$

In series combination effective resistance will be maximum.
ie, $R_{e q} = R_{1} + R_{2} + R_{3}$
$R_{e q} = 5 Ω + 4.5 Ω + 3 Ω = 12.5 Ω$

Option A

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Combine three resistors 5Ω,4.5Ω and 3Ω in such a way that the total resistance of this combination is maximum:

The correct option is B 12.5ΩGiven resistance,R1=5ΩR2=4.5ΩR1=3ΩIn series combination effective resistance will be maximum.ie, Req=R1+R2+R3 Req=5Ω+4.5Ω+3Ω=12.5ΩOption A

Combine three resistors $5 Ω, 4.5 Ω$ and $3 Ω$ in such a way that the total resistance of this combination is maximum:

The correct option is B $12.5 Ω$
Given resistance,
$R_{1} = 5 Ω R_{2} = 4.5 Ω R_{1} = 3 Ω$

In series combination effective resistance will be maximum.
ie, $R_{e q} = R_{1} + R_{2} + R_{3}$
$R_{e q} = 5 Ω + 4.5 Ω + 3 Ω = 12.5 Ω$

Option A