Part A What current is needed to generate the magnetic field strength of 5.0 x 1

Question

Part A What current is needed to generate the magnetic field strength of 5.0 x 10 5 T at a point 2.5 cm from a long, straight wire? Express your answer to two significant figures and include the appropriate units Value Units Submit Part B What current is needed to generate the magnetic field strength of 5.0 x 10 Tat a point 2.5 cm from a long, straight wire? Express your answer to two significant figures and include the appropriate units 1 Value Units Submit Part C What current is needed to generate the magnetic field strength of 1.0 T at a point 2.5 cm from a long, straight wire? Express your answer to two significant figures and include the appropriate units Value Units Submit Request Answer

Explanation / Answer

a)

Magnetic field due to long straight wire is given by

B=uoI/2pir

=>I=2pirB/uo

I=2pi*0.025*(5*10-5)/(4pi*10-7)

I=6.25 A

b)

I=2pi*0.025*(5*10-3)/(4pi*10-7)

I=625 A

c)

I=2pi*0.025*1/(4pi*10-7)=125000 A

d)

I=2pi*0.025*10/(4pi*10-7)=1250000 A

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