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Short Answer 1. A solenoid is connected to an ammeter. The solenoid is 6 cm long...
2. The south pole of a bar magnet is brought close to a 250s-turn/m, 60-cm long...
2. The south pole of a bar magnet is brought close to a 250s-turn/m, 60-cm long copper solenoid with a radius of 7 cm. The wire has a cross-sectional area of 1.33 x 105 m² and is being kept at 25°C. Copper wire has a resistivity of 1.72 x 10% Om at 20°C and a temperature coefficient of resistivity of 3.9 x 10C!. If there is an induced current of 3 A after 0.2 s, what is the strength and...
Question 3 A long solenoid with n turns per unit length of current I is wrapped around a cylindri...
Question 3 A long solenoid with n turns per unit length of current I is wrapped around a cylindrical magnetic core of permeability μ μ0Hm The cylindrical core, extending along the z-axis, has radius α n turns per unit length, current I per turn Magnetic material of μ (a) If the solenoid is considered as infinite in length, it can be shown that the magnetic field, expressed in cylindrical coordinates, is: r> a Apply Ampere's law, using the rectangular path...
5) A solenoid comprises 500,000 turns of wire and is 10 cm long and 1.0 cm...
5) A solenoid comprises 500,000 turns of wire and is 10 cm long
and 1.0 cm in radius.
a) Find the resultant magnetic field inside the coil if a current
of 1 μA flows through the wire.
b) How would this change if the core is filled with mumetal (μ =
300 μ0 ).
6) The solenoid of Q5 is placed in a region where the perpendicular
magnetic field strength is varying sinusoidally by 20 μT at a rate
of...
A solenoid that is 39.0 cm long and contains 470 circular coils 1.80 cm in diameter...
A solenoid that is 39.0 cm long and contains 470 circular coils 1.80 cm in diameter carries a 1.85 A current. 1.)What is the magnetic field at the center of the solenoid, 0.900 cm from the coils? 2.) Suppose we now stretch out the coils to make a very long wire carrying the same current as before. What is the magnetic field 0.900 cm from the wire? 3.)Is the magnetic found in part B the same as you found in...
You have a magnet that is 2.3cm in diameter and 9cm long. At the north pole...
You have a magnet that is 2.3cm in diameter and 9cm long. At the north pole of this magnet, the magnetic field is 0.09T. You want to see if you can construct a solenoid with the same dimensions as the bar magnet with the same strength. If you constructed the solenoid out of 18-gauge wire (diameter 1.02mm), how many turns would it take when passing 2.2A through it to create the same magnetic field? Does this seem like a reasonable...
A solenoid of length 20 cm and diameter 4 cm is constructed with 400 turns of...
A solenoid of length 20 cm and diameter 4 cm is constructed with 400 turns of wire The resistance of the wire can be neglected. A currenti is supplied to the solenoid in such a wav tha increases from zero to 0.5 A at a uniform rate over 2 seconds. Th 0.5 A. Calculate: e current then stays constant at (a) the inductance of the solenoid, (b) the maximum magnetic field in the solenoid, (c) the potential difference across the...
Problem 5: A 5 cm long wire is in a uniform magnetic field of 4T, so...
Problem 5: A 5 cm long wire is in a uniform magnetic field of 4T, so that current in the wire is perpendicular to the magnetic field. The wire is connected to a 10 ohm resistor in series, so that the resistance of the wire is negligible. The wire and resister are then connected in series to a charged 1500mF capacitor at 50 kV. A: What is the current through the wire as function of time, with t-0 being when...
Procedure: Take one of the coils and connect it to the galvanometer. Use the cylindrical magnet...
Procedure: Take one of the coils and connect it to the
galvanometer. Use the cylindrical magnet to generate a changing
magnetic field around the coil and note the reading of the
galvanometer as the field changes. Thrust the N pole of the magnet
into the coil and note the effect on the galvanometer. When the
needle has come to rest, withdraw the magnet as quickly as
possible. Note the effect on the direction of current flow. Reverse
the magnet and...
A square ammeter has sides of length 3.00 cm. The sides of the ammeter are capable...
A square ammeter has sides of length 3.00 cm. The sides of the ammeter are capable of measuring the magnetic field they are subject to. When the ammeter is clamped around a wire carrying a direct current, as shown in the figure, the average value of the magnetic field measured in the sides is 4.00 G, What is the current in the wire? A coaxial cable consists of an insulated wire carrying current I_I=4.00A surrounded by a cylindrical conductor carrying...
Moving charges will produce a local magnetic field, but the reverse is also true a changing...
Moving charges will produce a local magnetic field, but the reverse is also true a changing magnetic field will similarly induce charges to move (ie. produce current). Consider a magnet moving into a coil of wire: A spinal coil of wire with many closely-spaced tums this is called a solenoid is connected to a micro-ammeter as shown in the diagram above. As the magnet moves into the coil, any induced current will be measured by the micro-ammeter. Question On the...
2. The south pole of a bar magnet is brought close to a 250s-turn/m, 60-cm long copper solenoid with a radius of 7 cm. The wire has a cross-sectional area of 1.33 x 105 m² and is being kept at 25°C. Copper wire has a resistivity of 1.72 x 10% Om at 20°C and a temperature coefficient of resistivity of 3.9 x 10C!. If there is an induced current of 3 A after 0.2 s, what is the strength and...
Question 3 A long solenoid with n turns per unit length of current I is wrapped around a cylindrical magnetic core of permeability μ μ0Hm The cylindrical core, extending along the z-axis, has radius α n turns per unit length, current I per turn Magnetic material of μ (a) If the solenoid is considered as infinite in length, it can be shown that the magnetic field, expressed in cylindrical coordinates, is: r> a Apply Ampere's law, using the rectangular path...
5) A solenoid comprises 500,000 turns of wire and is 10 cm long
and 1.0 cm in radius.
a) Find the resultant magnetic field inside the coil if a current
of 1 μA flows through the wire.
b) How would this change if the core is filled with mumetal (μ =
300 μ0 ).
6) The solenoid of Q5 is placed in a region where the perpendicular
magnetic field strength is varying sinusoidally by 20 μT at a rate
of...
A solenoid of length 20 cm and diameter 4 cm is constructed with 400 turns of wire The resistance of the wire can be neglected. A currenti is supplied to the solenoid in such a wav tha increases from zero to 0.5 A at a uniform rate over 2 seconds. Th 0.5 A. Calculate: e current then stays constant at (a) the inductance of the solenoid, (b) the maximum magnetic field in the solenoid, (c) the potential difference across the...
Problem 5: A 5 cm long wire is in a uniform magnetic field of 4T, so that current in the wire is perpendicular to the magnetic field. The wire is connected to a 10 ohm resistor in series, so that the resistance of the wire is negligible. The wire and resister are then connected in series to a charged 1500mF capacitor at 50 kV. A: What is the current through the wire as function of time, with t-0 being when...
Procedure: Take one of the coils and connect it to the
galvanometer. Use the cylindrical magnet to generate a changing
magnetic field around the coil and note the reading of the
galvanometer as the field changes. Thrust the N pole of the magnet
into the coil and note the effect on the galvanometer. When the
needle has come to rest, withdraw the magnet as quickly as
possible. Note the effect on the direction of current flow. Reverse
the magnet and...
A square ammeter has sides of length 3.00 cm. The sides of the ammeter are capable of measuring the magnetic field they are subject to. When the ammeter is clamped around a wire carrying a direct current, as shown in the figure, the average value of the magnetic field measured in the sides is 4.00 G, What is the current in the wire? A coaxial cable consists of an insulated wire carrying current I_I=4.00A surrounded by a cylindrical conductor carrying...
Moving charges will produce a local magnetic field, but the reverse is also true a changing magnetic field will similarly induce charges to move (ie. produce current). Consider a magnet moving into a coil of wire: A spinal coil of wire with many closely-spaced tums this is called a solenoid is connected to a micro-ammeter as shown in the diagram above. As the magnet moves into the coil, any induced current will be measured by the micro-ammeter. Question On the...
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