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Karnataka Board PUCPUC Science 2nd PUC Class 12

Given the resistances of 1 Ω, 2 Ω, 3 Ω, how will be combine them to get an equivalent resistance of (11/5) Ω?

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Question

Given the resistances of 1 Ω, 2 Ω, 3 Ω, how will be combine them to get an equivalent resistance of  (11/5) Ω?

Numerical
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Solution

Equivalent resistance, R' = `11/5` Ω

Consider the following combination of the resistors.

Equivalent resistance of the circuit is given by,

R' = `(2 xx 3)/(2 + 3) + 1`

= `6/5 + 1`

= `11/5` Ω

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Chapter 3: Current Electricity - Exercise [Page 129]

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NCERT Physics Part I and II [English] Class 12
Chapter 3 Current Electricity
Exercise | Q 3.20 (b) (ii) | Page 129

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