2. If the current in a solenoid is reversed in direction while keeping the same magnitude, the magnetic energy density will a. decrease b. increase c. not change d. become zero

Q: 1. How can a current loop be used to detemine the presence of a magnetic field in a given region of…

A: B-field lines: B-field lines are directed from N→S outside magnet. These lines never cross or…

Q: 2. You have a solenoid that is 40 cm long and with 350 turns and want to produce a magnetic field…

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Q: 3. What current is needed in the solenoid with 10400 turns per meter to produce a magnetic field…

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Q: 13- An electron moving in the -y direction is magnetically stable. If it deviates in the -x…

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Q: 2-) Figure shows a top view of a bar that can slide without friction. The resistor is 6.00 Q and a…

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Q: 3) An electron moving along the +x-axis enters a magnetic field. If the electron experiences a…

A: The electron is moving along the + x axis it implies that the current is directed along - x axis.…

Q: QUESTION 8 "A single loop of wire of area 0.1 m2 is placed perpendicular to a magnetic field of…

A: When the magnetic flux related to the loop/ wire changes then an emf is induced in the wire. The…

Q: 93. A circuit with current I has two long parallel wire sections that carry current in opposite…

A: Here, current in both the wires I=2 A Distance a=5 cm and b=3 cm

Q: 1) What are the names of the poles on a magnet and how do you know which pole is on which end of the…

A: poles of magnet

Q: 16. A solenoid of length 0-20 m, having 120 turns carries a current of 2-5 A. Find the magnetic…

A: Given: L = length of solenoid = 0.20 m N = number of turns in solenoid = 120 turns I = current…

Q: 16. A solenoid of length 0-20 m, having 120 turns carries a current of 2-5 A. Find the magnetic…

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Q: 12-Inside an ideal solenoid carrying current, the magnetic field A) is uniform. B) is zero. C)…

A: A solenoid is a tightly wound helical coil of wire. Its diameter is small compared to its length. In…

Q: 7. In the diagram shown below, a 0.45 T uniform magnetic field is directed into the plane of the…

A: Given: The strength of the magnetic field is 0.45 T into the plane. The resistance of the circuit is…

Q: You have designed and constructed a solenoid to produce a magnetic field equal in magnitude to that…

A: Magnetic field B = 5× 10-5 T  No of turn N = 500, Length L = 38cm         L       = 0.38 m So,…

Q: The magnetic field inside a 14.0 cm-long solenoid is measured to be 5.34 x 10-4 T. If the solenoid…

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Q: 8. From Ampere's law, it can be shown that the magnetic field B inside a long solenoid is B = HonI…

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Q: 19- Current i flows through the bended wire as shown in the figure. If the magnetic field magnitude…

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Q: A solenoid coil of 300 turns/m is carrying a current of 5 A . The length of the solenoid is 0.5 m…

A: Given data:  Number of turns per meter (n)= 300 turns/m Current (I) = 5 A Length (L) = 0.5 m Radius…

Q: An air-filled solenoid has a diameter 10.5 cm and a length 5.58 cm, and it has 653 turns of wire. If…

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Q: 5. A solenoid is connected to a battery as shown in Fig. 20.51, and a bar magnet is placed nearby.…

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Q: 5. A rectangular loop of wire that is 35 cm wide and 15 cm long is placed in a region where the…

A: The magnetic flus through the loop will be  Flux = B×A×cosθ where B is magnetic field and A is area…

Q: 2) A circular wire of diameter D has a magnetic flux passing through it of 0.82-Wb. The wire is…

A: Given data: Magnetic flux at initial is, ϕ1=0.82 Wb.

Q: 1. What is the magnetic field at a point that is 10 cm from long straight wire carrying a current of…

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Q: What current must be in the solenoid so that the solenoid field just cancels Earth's 4.2 x 10-5-T…

A: Earth's magnetic field (B) = 4.2×10-5 T radius (r) = 1 m Number of turns (N) = 780 Length (L) = 4.6…

Q: 8.) The Earth's magnetic poles remain in fixed positions, coinciding with the geographic poles. a.…

A: Polarity of earth's magnetic field

Q: 6. Using the right-hand rule, find the direction of the following: a. The force if the velocity is…

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Q: 19 - Current i flows through the bended wire as shown in the figure. If the magnetic field magnitude…

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Q: 2. A 20 cm section of wire carrying a current of 12 A is positioned at 90° to a 0.1 T magnetic…

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Q: 5. How can we say that the magnetic flux is zero when the magnetic field is not zero? given oc

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Q: 29. a). What is the key difference between an electric generator and an electric motor? b). Indicate…

A: Part-(29): Part (a): Explanation: The structure of electric motor and electric generator are similar…

Q: 1. A magnetic field of 3.2 T is perpendicular to a square coil of 12 turns. The length of each side…

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Q: 4. The magnetic field on the distance 4.5 cm from the current - carrying straight, long conductor is…

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Q: A current-carrying wire is straight up and down, perpendicular to the floor. The magnetic field is…

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Q: 2. An electron at point A in the figure has a speed vo of 1.41 x 106 m/s. Find (a) the magnitude and…

A: The speed of the electron at point A is 1.41×106 m/s.  To determine: (a) The magnitude and direction…

Q: . The vertical magnetic field, initially zero, is slowly increased. When the field strength reaches…

A: In this problem  Frictional force = magnetic  force μmg= BIL Given that B=B0

Q: 8. Two straight conductors are carrying current in the opposite direction. The force between them is…

A: Attractive force: When the two straight conductor carrying current in same direction, this implies…

Q: 26-m length of horizontal wire carries a 4.5A current toward the south. The dip angle of the Earth's…

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Q: 5. A wire of length 15 cm, experiences a force of 75 N when kept perpendicular to a magnetic field.…

A: Given: Lenght of wire (l) = 0.15m Force on the wire (F) = 75 N Angle between the wire and the…

Q: 5- Electrons accelerated from rest under a potential difference of 900 enter perpendicularly into…

A: Given: Electrons accelerated from rest under a potential difference of 900 enter perpendicularly…

Q: 3. A proton moving eastward with a velocity of 5.0 km/s enters a magnetic field of 0.20 T pointing…

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Q: 16. A solenoid of length 0-20 m, having 120 turns carries a current of 2-5 A. Find the magnetic…

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Q: 2. A hypothetical charge -0.33 G with a mass 52 fg moves in a circular path perpendicular to a…

A: Given in the question: Speed of the charge (v) = 41km/s = 41,000m/s Charge (q) = -0.33pC =…

Q: 2) A single-turn wire loop 10 cm in diameter carries a 12-A current. It experiences a 0.015 Nm…

A: When a current carrying loop is placed in magnetic field at some angle then it experience torque.

Q: A toroid has an inner radius of 3cm and outer radius of 5 cm. Determine the: a.) magnetic field at…

A: Ans:- Image-1

Q: 4. A 135 m long transmission wire is stretched between two vertical posts. It carries of a current…

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Q: 2. Calculate both magnetic flux and magnetic field strength on the axis of solenoid with length 1 cm…

A: Given, Length of solenoid ,l = 1cm = 0.01m Number of turns = 200 Current, I = 1.5 A

Q: 3) 1250 circular loops are staked together and placed inside of a solenoid (a region of uniform…

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