An MEG (magnetoencephalography) machine can detect 1.00×10−15 T. Approximating a neuron as a straight wire, what...
An MEG (magnetoencephalography) machine can detect 1.00×10−15 T. Approximating a neuron as a straight wire, what current is required to produce this small of a B⃗ at a distance of 3.01 cm?
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An MEG (magnetoencephalography) machine can detect 1.00×10−15 T.
Approximating a neuron as a straight wire, what...
Neurons in our bodies carry weak currents that produce detectable magnetic fields. A technique called magnetoencephalography,...
Neurons in our bodies carry weak currents that produce detectable magnetic fields. A technique called magnetoencephalography, or MEG, is used to study electrical activity in the brain using this concept. This technique is capable of detecting magnetic fields as weak as 1.0 10-15 T. Model the neuron as a long wire carrying a current and find the current it must carry to produce a field of this magnitude at a distance of 4.4 cm from the neuron.
Neurons in our bodies carry weak currents that produce detectable magnetic fields. A technique called magnetoencephalography,...
Neurons in our bodies carry weak currents that produce detectable magnetic fields. A technique called magnetoencephalography, or MEG, is used to study electrical activity in the brain using this concept. This technique is capable of detecting magnetic fields as weak as 0.8x10−15 T. Model the neuron as a long wire carrying a current and find the current it must carry to produce a field of this magnitude at a distance of 3.8 cm from the neuron.
Magnetoencephalography (MEG) is a technique for measuring changes in the magnetic field of the brain caused...
Magnetoencephalography (MEG) is a technique for measuring
changes in the magnetic field of the brain caused by external
stimuli such as touching the body or viewing images of food. Such a
change in the field occurs due to electrical activity (current) in
the brain. During the process, magnetic sensors are placed on the
skin to measure the magnetic field at that location....
Magnetoencephalography (MEG) is a technique for measuring changes in the magnetic field of the brain caused by external...
Magnetoencephalography (MEG) is a technique for measuring changes in the magnetic field of the brain caused...
Magnetoencephalography (MEG) is a technique for measuring changes in the magnetic field of the brain caused by external stimuli such as touching the body or viewing images of food. Such a change in the field occurs due to electrical activity (current) in the brain. During the process, magnetic sensors are placed on the skin to measure the magnetic field at that location. Typical field strengths are a few femtoteslas (1 femtotesla=1 fT=10−15 T) . An adult brain is about 140...
physics help he magnetic field 35.0 cm away from a long, straight wire carrying current 1.00...
physics help
he magnetic field 35.0 cm away from a long, straight wire carrying current 1.00 A is 7.00 HT (a) At what distance is it 700 HT? 350 Cm (b) At one instant, the two conductors in a long household extension cord carry equal 1.00-A currents in opposite directions. The two wires are 3.00 mm apart Find the magnetic field 35.0 cm away from the middle of the straight cord, in the plane of the two wires. 6.5 How...
There is a long straight wire carrying current I = 497 amperes. At a distance of...
There is a long straight wire carrying current I = 497 amperes. At a distance of 1.4 meter away, a small piece of wire (length 3 cm) carries a current of 15 amperes in a direction parallel to the long wire. (a) Calculate the value of the B field generated by the long wire at the position of the small wire. B = ?T (b) Using your result for B just found, calculate the force on the small wire. F...
7. (15 points). A rectangular loop of wire is placed next to a straight wire at...
7. (15 points). A rectangular loop of wire is placed next to a straight wire at the distance d 6.0 cm as shown in figure (a = 20.0cm, b = 10.0cm). There is a current of 10 A in both wires. Determine a) (10 points) the magnitude and a) (5 points) direction of the net force on the loop
Consider a long straight wire that carries a current of I1= 375 mA upward. (a) What...
Consider a long straight wire that carries a current of I1= 375 mA upward. (a) What is the magnitude and direction of the magnetic field generated by the wire a distance of 1.00 cm to the left of the wire? (b) Now consider that another long straight wire is placed in parallel with the first one, at the location considered in a, 1.00 cm to the left of the first wire. This new wire has a current of I2= 236.0...
A long straight wire lies along the x axis carries a current of 15 amps in...
A long straight wire lies along the x axis carries a current of 15 amps in the position x direction. A second long straight wire lies parallel to the first and carries a current of 20 amps in the negative x direction. They are separated by a distance of 7.00 cm. What is the direction and magnitude of the resultant. magnetic field at a point in the xy plane 4 cm. from the first wire and 3 cm from the second?
a) Suppose a straight 1.40 mm -diameter copper wire could just "float" horizontally in air because...
a) Suppose a straight 1.40 mm -diameter copper wire could just "float" horizontally in air because of the force due to the Earth's magnetic field B⃗, which is horizontal, perpendicular to the wire, and of magnitude 3.4×10−5 T . What current would the wire carry? Does the answer seem feasible? Explain why. b) The force on a wire carrying 7.95 A is a maximum of 2.13 N when placed between the pole faces of a magnet If the pole faces...
Magnetoencephalography (MEG) is a technique for measuring
changes in the magnetic field of the brain caused by external
stimuli such as touching the body or viewing images of food. Such a
change in the field occurs due to electrical activity (current) in
the brain. During the process, magnetic sensors are placed on the
skin to measure the magnetic field at that location....
Magnetoencephalography (MEG) is a technique for measuring changes in the magnetic field of the brain caused by external...
physics help
he magnetic field 35.0 cm away from a long, straight wire carrying current 1.00 A is 7.00 HT (a) At what distance is it 700 HT? 350 Cm (b) At one instant, the two conductors in a long household extension cord carry equal 1.00-A currents in opposite directions. The two wires are 3.00 mm apart Find the magnetic field 35.0 cm away from the middle of the straight cord, in the plane of the two wires. 6.5 How...
7. (15 points). A rectangular loop of wire is placed next to a straight wire at the distance d 6.0 cm as shown in figure (a = 20.0cm, b = 10.0cm). There is a current of 10 A in both wires. Determine a) (10 points) the magnitude and a) (5 points) direction of the net force on the loop
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