Question

In: Physics

A horizontal power line of length 55 m carries a current of 2.1 kA as shown...

A horizontal power line of length 55 m carries a current of 2.1 kA as shown in the figure below. Earth's magnetic field at this location has a magnitude equal to 5.0 X 10-5 T and makes an angle of 65° with the power line. Find the magnitude and direction of the magnetic force on the power line.

uploaded image


Magnitude = ____________N

Direction = _____________


Solutions

Expert Solution


Related Solutions

The figure below shows a section of an overhead power line that is 60.5 m long and carries a current of 2.10 kA.
The figure below shows a section of an overhead power line that is 60.5 m long and carries a current of 2.10 kA. The current is directed to the north. The magnitude of the Earth's magnetic field at this location i 4.50 x 10-5 T. The field has a northward component and a downward component, so that it makes an angle of 65.0° with the power line. (a) What is the magnitude of the magnetic force (in N) on the power...
A 6.60-m length of 2.1-mm-diameter wire carries a 790 mA current when 24.0 mV is applied...
A 6.60-m length of 2.1-mm-diameter wire carries a 790 mA current when 24.0 mV is applied to its ends. a) Determine the resistance RR of the wire. b) Determine the resistivity ρρ. c) If the drift speed is 1.9×10−5m/s, determine the number n of free electrons per unit volume.
A high voltage power line carries a current of 105 A at a location where the...
A high voltage power line carries a current of 105 A at a location where the Earth's magnetic field has a magnitude of 0.588 G and points the to the North, 74.7 degrees below the horizontal. Calculate the magnitude of the magnetic force exerted on a 253 m length of wire if the current in the wire flows horizontally toward the east? _____________________________________________________________ Calculate the magnitue of the magnetic force exerted on a 253 m length of wire if the...
A high-voltage power line carries a current of 122 A at a location where the Earth's...
A high-voltage power line carries a current of 122 A at a location where the Earth's magnetic field has a magnitude of 0.59 G and points to the north, 68 ∘ below the horizontal. Find the direction of the magnetic force exerted on a 330 mm length of wire if the current in the wire flows horizontally toward the east. A:force points toward north, 22 ∘∘ above the horizontal B:force points toward north, 68 ∘∘ above the horizontal C:force points...
6 mm diameter power line carries 40 A current and the resistance of one meter is...
6 mm diameter power line carries 40 A current and the resistance of one meter is 0.02 ohms. Find the surface temperature of the wire on a day when the wind temperature is 10 ° C, the wind speed is 40 km / h and it crosses the wire. Air characteristics: p = 1.246 kg / m3. k = 0.02439 W / m ° C. Pr = 0.7336, v = 1.426x10 m / s. (Electrical power, P = 1 *...
A horizontal power line (long straight wire) caries a current that varies sinusoidally with time at...
A horizontal power line (long straight wire) caries a current that varies sinusoidally with time at a rate of 60 Hz: I(t) = I0sin(2πft), where I0 = 55 kA is the amplitude of the current and f = 60 Hz. The wire is 7.0 m above ground. Farmer Joe, having learned some physics, knows that the alternating current in the wire produces an alternating magnetic field around it, and that if he were to place a coil of wire near...
A rectangular channel carries a flow at a velocity of 2.1 m/sec and at a depth...
A rectangular channel carries a flow at a velocity of 2.1 m/sec and at a depth of 2.1m. The tail end gate of the channel is suddenly closed. Find the height and speed of the surge. What would be the values of these quantities if the gate is partially closed to release half of the flow?
A 6.10 m length of 2.4 mm -diameter wire carries a 770 mA current when 22.0...
A 6.10 m length of 2.4 mm -diameter wire carries a 770 mA current when 22.0 mV is applied to its ends. The drift velocity is 2.0×10−5 m/s . A. Determine the resistance R of the wire. Express your answer to three significant figures and include the appropriate units. B. Determine the resistivity ρ. Express your answer to two significant figures and include the appropriate units. C.Determine the current density j. Express your answer to two significant figures and include...
A long, horizontal wire AB rests on the surface of a table and carries a current...
A long, horizontal wire AB rests on the surface of a table and carries a current I. Horizontal wire CD is vertically above wire AB and is free to slide up and down on the two vertical metal guides C and D (the figure ). Wire CD is connected through the sliding contacts to another wire that also carries a current I, opposite in direction to the current in wire AB. The mass per unit length of the wire CD...
A long, straight, copper wire with a circular cross-sectional area of 2.1 mm2 carries a current...
A long, straight, copper wire with a circular cross-sectional area of 2.1 mm2 carries a current of 22 A. The resistivity of the material is 2.00 10-8?
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT