I keep getting the first part wrong... I got 5.0 x 10^-6A Need a good break down
ID: 3896253 • Letter: I
Question
I keep getting the first part wrong... I got 5.0 x 10^-6A Need a good break down,A power line carries a current of 75A west along the tops of 8.5-m-high poles. Part A What is the magnitude of the magnetic field produced by this wire at the ground directly below? Express your answer using two significant figures. B = T Incorrect; Try Again; 4 attempts remaining Part B What is the direction of the magnetic field produced by this wire at the ground directly below? east south west north Correct Part C How does this compare with the Earth's magnetic field of about 12 G? Express your answer using one significant figure. Bline/BEarth = Part D Where would the wire's magnetic field cancel the Earth's field? Express your answer using one significant figure. d = mbelow the wire Provide FeedbackContinue I keep getting the first part wrong... I got 5.0 x 10^-6A Need a good break down,
A power line carries a current of 75A west along the tops of 8.5-m-high poles. Part A I keep getting the first part wrong... I got 5.0 x 10^-6A Need a good break down,
A power line carries a current of 75A west along the tops of 8.5-m-high poles. Part A I keep getting the first part wrong... I got 5.0 x 10^-6A Need a good break down,
A power line carries a current of 75A west along the tops of 8.5-m-high poles. Part A I keep getting the first part wrong... I got 5.0 x 10^-6A Need a good break down,
A power line carries a current of 75A west along the tops of 8.5-m-high poles. Part A What is the magnitude of the magnetic field produced by this wire at the ground directly below? Express your answer using two significant figures. B = T Incorrect; Try Again; 4 attempts remaining Part B What is the direction of the magnetic field produced by this wire at the ground directly below? east south west north Correct Part C How does this compare with the Earth's magnetic field of about 12 G? Express your answer using one significant figure. Bline/BEarth = Part D Where would the wire's magnetic field cancel the Earth's field? Express your answer using one significant figure. d = mbelow the wire Provide FeedbackContinue What is the magnitude of the magnetic field produced by this wire at the ground directly below? Express your answer using two significant figures. B = T Incorrect; Try Again; 4 attempts remaining Part B What is the direction of the magnetic field produced by this wire at the ground directly below? east south west north Correct Part C How does this compare with the Earth's magnetic field of about 12 G? Express your answer using one significant figure. Bline/BEarth = Part D Where would the wire's magnetic field cancel the Earth's field? Express your answer using one significant figure. d = mbelow the wire What is the magnitude of the magnetic field produced by this wire at the ground directly below? Express your answer using two significant figures. B = T Incorrect; Try Again; 4 attempts remaining Part B What is the direction of the magnetic field produced by this wire at the ground directly below? east south west north Correct Part C How does this compare with the Earth's magnetic field of about 12 G? Express your answer using one significant figure. Bline/BEarth = Part D Where would the wire's magnetic field cancel the Earth's field? Express your answer using one significant figure. d = mbelow the wire What is the magnitude of the magnetic field produced by this wire at the ground directly below? Express your answer using two significant figures. B = T Incorrect; Try Again; 4 attempts remaining Part B What is the direction of the magnetic field produced by this wire at the ground directly below? east south west north Correct Part C How does this compare with the Earth's magnetic field of about 12 G? Express your answer using one significant figure. Bline/BEarth = Part D Where would the wire's magnetic field cancel the Earth's field? Express your answer using one significant figure. d = mbelow the wire What is the magnitude of the magnetic field produced by this wire at the ground directly below? Express your answer using two significant figures. B = T Incorrect; Try Again; 4 attempts remaining What is the magnitude of the magnetic field produced by this wire at the ground directly below? Express your answer using two significant figures. B = T Incorrect; Try Again; 4 attempts remaining B = T B = T Incorrect; Try Again; 4 attempts remaining Incorrect; Try Again; 4 attempts remaining Incorrect; Try Again; 4 attempts remaining Part B What is the direction of the magnetic field produced by this wire at the ground directly below? east south west north Correct Part B What is the direction of the magnetic field produced by this wire at the ground directly below? east south west north Correct east south west north east south west north east south west north Correct Correct Correct Part C How does this compare with the Earth's magnetic field of about 12 G? Express your answer using one significant figure. Bline/BEarth = Part C How does this compare with the Earth's magnetic field of about 12 G? Express your answer using one significant figure. Bline/BEarth = Bline/BEarth = Bline/BEarth = Part D Where would the wire's magnetic field cancel the Earth's field? Express your answer using one significant figure. d = mbelow the wire Part D Where would the wire's magnetic field cancel the Earth's field? Express your answer using one significant figure. d = mbelow the wire d = mbelow the wire d = mbelow the wire Provide FeedbackContinue B = T
Explanation / Answer
A)
B = mue*i/(2*pi*r)
= 4*pi*10^-7*75/(2*pi*8.5)
= 1.765*10^-6 T
B) direction of B is towards south
C) 1 gauss = 10^-4 T
Bline/BEarth = 1.765*10^-6/12*10^-4 = 1.47*10^-3
D)
let ata distance d, Bline = Bearth
B = mue*i/(2*pi*d)
d = mue*i/(2*pi*B)
= 4*pi*10^-7*75/(2*pi*12*10^-4)
= 12.5*10^-3 m
= 1.25 cm