CHAPTER (1) - SPARK-ELECTRICITY
A wire is stretched till its length is increased by 60%, so its resistance becomes its
inal value.
64
(b)
uloo
00 un
25
(c)
(d)
potential difference of 12V is needed to move 6.5 x 1018 electron between the
nals of a conductor in 2 seconds, then the resistance of the conductor is
5
R
Slop
с
B
(a) 12112
(c) 612 (d) 3.8412
Se=se-se
hree conducting wires of same material A, B and C of different
ectional area, the opposite graph illustrates the relation
en electric resistance and the length for the three wires, The
hich has the greatest cross-sectional area is
A