Unit dimension-Questions

1.            Which of the following is not equal to watt

[SCRA 1991; CPMT 1990]

(a)   Joule/second                   (b)   Ampere * volt

(c)    (Ampere)² *ohm              (d)   Ampere/volt

 Ans-       (d)   Watt=Joule/second = Ampere×volt = Ampere²×Ohm

2.          The unit of self inductance of a coil is

[MP PMT 1983, 92; SCRA 1986; CBSE PMT 1993;

CPMT 1984, 85, 87]

(a)   Farad                                 (b)   Henry

(c)    Weber                               (d)   Tesla 

Ans-(a)  henry 

3. In which of the following systems of unit, weber is the unit of magnetic flux  

                                [SCRA 1991; CBSE PMT 1993; DPMT 2005]

(a)   CGS                                   (b)   MKS

(c)   SI                                        (d)   None of these

 ANS- (c)

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