Question

(Section - C)
3x 5= 15
11. The table given below shows the elevation relative to sea level of four locations. Taking sea
level as zero, answer the following question.
Location
A
B
Elevation (in m)
-180
1600
-55
3200
с
D​

Answer 1







Class 11

PHYSICS

UNITS AND MEASUREMENT

Two resistors of resistancesohm andohm are connected (a) in series, (b) in parallel. Find the equivalent resistance of the (a) series combination, (b) parallel combination. Use for (a) the relationand for (b)and



Text Solution

Solution :

(a) The equivalent resistance of series combination <br>

<br>

<br> (b) The equivalent resistance of parallel combination <br>

<br> Then, from

<br> we get, <br>

<br>

<br>

<br> Then,

ohm <br> (Here,

is expresed as 1.8 instead of 2 to keep in confirmity with the rules of significant figure). <br> (c) Error in case of a measured quantity raised to a power <br> Suppose

<br> Then. <br>

. <br> Hence, the relative error in

is two times the error in A. <br> In general, if

<br> Then, <br>