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Solution :

Here, `R_1 = 16 ohm, Delta R_1 = 0.3 Omega` <br> `R_2 = 48 ohm, DeltaR_2 =0.5 Omega, R_p = ?` <br> `(1)/(R_p) = (1)/(R_1) +(1)/(R_2) = (1)/(16) +(1)/(48) = (3+1)/(48) = (4)/(48) = (1)/(12)` <br> `R_p = 12 ohm` <br> On differentating, `(1)/(R_p) = (1)/(R_1) +(1)/(R_2)`, we get `(-DeltaR_p)/(R_p^2) = - (DeltaR_1)/(R_1^2) - (DeltaR_2)/(R_2^2)` <br> `:. DeltaR_p = DeltaR_1((R_p)/(R_1))^2 + DeltaR_2((R_p)/(R_2))^2 = 0.3((12)/(16))^2 +0.5((12)/(48))^2` <br> = `0.16875+0.03125 = 0.20 ohm` <br> `(DeltaR_p)/(R_p)xx10 = (0.20)/(12)xx100 = 1.6%`**PHYSICAL QUANTITY AND IT'S TYPES**

**Fundamental And Derived Quantity**

**System Of Units**

**Fundamental And Derived Units**

**Dimension Of A Physical Quantity**

**Dimension Of Angular Quantity**

**Conversion Of A Physical Quantity From One System To Another**

**Application Of Dimensional Analysis**

**Limitation Of Dimensional Analysis**

**Rounding Off**