A fine insulated wire 15.7 m long is used to make a coil of radius 5cm find magnitude of magnetic induction in air at centre of coil where current of 0.2 ampere is sent through it
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formula=ų0×I/2×r
ų0=4pi×10^-7 I=0.2 r=5
4×22×10^-7×2/7×2×5×10
25.142×10^-9
ų0=4pi×10^-7 I=0.2 r=5
4×22×10^-7×2/7×2×5×10
25.142×10^-9
yashnipane:
but what about length of wire and number of coil
bro length of the wire is circumference of circle and can b used to obtain radius which is given
i think it can b solved like this only
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