Q6 of 30 Page 1

The maximum resistance which can be made using four resistors each of resistance 1/2Ω is

The maximum resistance of a set of resistors can be obtained by connecting them in series.

Hence,


R = 1/2 + 1/2 + 1/2 + 1/2 = 2 ohm

More from this chapter

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4

Define electro positivity.

OR


The atomic radil of first group elements are given below:



State the reason behind the observed trend in the above elements.


 5

A cylindrical conductor of length ‘l’ and uniform are a of cross section 'A' has resistance 'R'. The are a of cross section of another conductor of same material and same resistance but of length '2l’ is

 7

The sky appears dark to passengers flying at very high altitudes mainly because :

 8

An element ‘X’ is forming an acidic oxide. Its position in modern periodic table will be

A. Group 1 and Period 3


B. Group 2 and Period 3


C. Group 13 and Period 8


D. Group 16 and Period 3


OR


Consider the following statements about an element ‘X’ with number of protons 13.


(A) It forms amphoteric oxide


(B) Its valency is three


(C) The formula of its chloride in XCl3


The correct statements(a) is/are


A. only (A) B. only (B)


C. (A) and (c) D. (A),(B) and (C)