the resistance of 1 M long nichrome wire is 6 ohms. if we reduce the length of the wire to 70 cm what will its resistance be?
Answers
Answered by
82
The resistance of the wire reduced be 4.2 ohms
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gokuldoodle27:
ok?
Answered by
34
resistivity of nichrome is 100×10^-6
resistance=6ohm
length=100cm
see the attachment
ok then another method is
x be the new resistance
100:6::70:x
x=420/100
x=4.2 ohm
resistance=6ohm
length=100cm
see the attachment
ok then another method is
x be the new resistance
100:6::70:x
x=420/100
x=4.2 ohm
Attachments:
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