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Two resistors of resistances R(1)=(100+-...

Two resistors of resistances `R_(1)=(100+-3)Omega` and `R_(2)=(200+-4)Omega` are connecrted in parallel. The equivalent resistance of the parallel combination is

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`R_"eq"=R_1+R_2`
`=(100pm3)+(200pm4)Omega`
`=(100+200)pm(3+4)`
`=300pm 7 Omega`
Thus the equivalent resistance is `300 Omega` with a maximum permissible absolute error of `7 Omega`
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AAKASH INSTITUTE ENGLISH-UNITS AND MEASUREMENTS-ASSIGNMENT (SECTION - D)
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  5. A : A unitless physical quantity must be dimensionless. R : A pure n...

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  6. A : Absolut error is unitless and dimensionless. R : All type of err...

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  7. A : Higher is the accuracy of measurement, if instrument have smaller ...

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  8. A : The maximum possible error in a reading is taken as least count of...

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  9. A : In a measurement, two readings obtained are 20.004 and 20.0004. Th...

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  10. A : Out of the measurements A = 20.00 and B = 20.000, B is more accura...

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  11. Assertion: When we change the unit of measurement of a quantity, its n...

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  12. A : All physically correct equations are dimensionally correct. R : ...

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  13. A : Physical relations involving addition and subtraction cannot be de...

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  14. A : If displacement y of a particle executing simple harmonic motion d...

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  15. A : An exact number has infinite number of significant digits. R : A...

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  16. A : A dimensionless quantity may have unit. R : Two physical quantit...

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