1. When a magnet is passed through a conducting wire coil, the changing magnetic flux will induce A. an electromagnetic force in the coil. B. a neutral charge on the Faraday Ice Coil. C. a positive charge on the Faraday lIce Pail. D. a negative charge on the Faraday Ice Coil.

Q: Which of the following is not true (regarding Lenz's Law) for the situation when a magnet falls…

A: Lenz's law is a fundamental law in electromagnetism that states that an induced current in a…

Q: According to Lenz's Law, the induced current flow direction will generate a magnetic flux O 1. in…

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Q: A transformer has a primary coil with 120 turns and secondary coil with 2000 turns. Transformer runs…

A: Given that , A transformer has a primary coil with 120 turns and secondary coil with 2000 turns.…

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: The commutator-brush system in the simple DC motor you studied functions to A. flip the current…

A: The commutator reverse the current in the armature every revolution to keep the motor rotating!…

Q: 3. You have a rod-shaped magnet, and a coil of wire connected to a voltmeter. Under which of the…

A: Faraday's law states that when a magnetic flux passing through a conducting loop changes, an…

Q: All

A: In every magnet there is a south pole and north pole if it is cut into half then also it will…

Q: A circular coil of wire carries 50 mA of current. The coil has 50 turns and an area of 2.0 cm². A…

A: Here there are 3 questions and as per the guidelines first question has been answered. Please share…

Q: 9. The following are factors involved in the induced emf of a coil of wire EXCEPT A. The induced emf…

A: The induced EMF is defined as the generation of a voltage or potential difference in a coil due to a…

Q: At a particular moment, the magnetic field from the primary coil points to the right and is…

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Q: 2. A 200-turn solenoid with length of 20 cm and diameter of 2 cm. When a 5-A current passes through…

A: Given data The number of turns in the solenoid is N = 200 turns. The length of the solenoid is l =…

Q: he electromagnet to the other

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Q: A transformer is to be used to step up voltage from an alternating current source from 120 V to 1800…

A: Given that:- The primary alternating voltage source is V1 = 120 V. The secondary alternating voltage…

Q: A student builds a step-down transformer with windings (in no particular order) of 40 and 120. If…

A: The given data are: Here, Np denotes the primary turns, Ns denotes the secondary turns, and Ip…

Q: A device that based on the magnetic force that is acting on a current-carrying wire or coil is a(n).…

A: A current-carrying coil in a magnetic field experiences a magnetic force. Due to this magnetic…

Q: 5. Describe the phenomenon of diamagnetism. A grape (which consists mainly of water, a diamagnetic…

A: Describe the phenomenon of diamagnetism.

Q: Using one of the equations in Ampere’s Law which is B=(2πr), prove that at any point inside the…

A: Firstly we make an amperian loop and then use Ampere circular law to  find magnetic inductionat…

Q: Q14. Magnetic field inside a solenoid is .  A. Strong at N pole and weak at S pole B. Strong at S…

A: The magnetic field within the solenoid is uniform and parallel to the axis of the solenoid.

Q: Suppose that a bar magnet is dropped through a horizontal loop of wire connected to a galvanometer.…

A: since the loop/ coil is kept horizontal and the bar magnet is dropped through it , so there will…

Q: Which of the following rule is used to determine the direction of rotation of the coil of the D.C…

A: The direction of rotation of the coil in dc motor

Q: An electric current produces a(an) A. insulator. B. solenoid. C. magnetic field. D. magnet.

A: Electric current is the flow of electric charge in the circuit.

Q: 3. The diagram below shows a rectangular 35.0-turn coil of wire with W=3.71 cm and L= 4.21 cm that…

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Q: The strength of a magnetic field created by the current in a wire can be increased by a. increasing…

A: Option (a) is correct .

Q: he S.I unit of magnetic field is

A: 1------ Magnetic field unit is .... TESLA....... OPTION A..... Ampere -unit of current  Ohm-- unit…

Q: If the distance from a current carrying wire doubles, the magnetic fi?eld produced by it a.…

A: IN THE QUESTION IT IS GIVEN THAT A CONDUCTOR IS CARRYING CURRENT (I) FROM THE APPLICATION OF…

Q: We can change the direction of rotation of a DC motor by changing the polarity of the electric…

A: The direction of electromagnetic torque developed by armature of the DC motor depends upon the…

Q: The magnetic flux of a coil will be positive maximum when, a. magnetic field is parallel to the…

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Q: The torque on a solenoid in a magnetic field is not a function of its ____. A. loop area B. number…

A: torque = force x radius force in magnetic field  = i*l*B                            i = current    l…

Q: QUESTION 15 What are some different ways to "spin the magnet" and generate electricity? O a. Wind,…

A: To generate the electricity we need to change the magnetic flux and this can be done in different…

Q: In a bar magnet, the force of attraction is minimum (approximately no force) O a. at both ends of a…

A: We need to comment on where the force of attraction due to bar magnet is minimum.

Q: What happens to the field if instead the length of the solenoid is doubled, with the number of turns…

A: We know, B = μoIN / L where, N = number of turns in the solenoid I = current in the coil L = length…

Q: 20. Both conducting loops shown below are coplanar (in the y/z axes) and carry current as shown.…

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Q: Which particular part of a the motor you can use to identify a "AC motor"? O a. Magnetic poles O b.…

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Q: magnetic flux

A: Since you have asked multiple question, we will solve the first question for you. If youwant any…

Q: A 0.250-mH coil is carrying a current of 6.0 A. What is the stored energy in the coil. a. 4.5 x 10 J…

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Q: what happens to the compass needle as you move the compass around? A. The compass needle always…

A: When compass moves around needle points to original position as there is magnetic field created so…

Q: How much current must flow through a long straight wire for the magnetic field strength to be 1.0 mT…

A: Given data, Magnetic field B=1 ×10-3 T Length l=0.02 m Constant μ0=4π×10-7 m/A

Q: 5. A search coil consisting of N turns of wire in a circle of radius r is used to measure small…

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Q: 9. The maximum torque experienced by a coil in a 7.80 × 10-³ T magnetic field is 0.80 N.m. The coil…

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Q: 6. Faraday's law of induction states that A. the direction of the induced emf is such that it…

A: 6. Faradays law states that Let's check each option one by one A. The direction of the induced EMF…

Q: 8. A coil with an inductance of 1.5 H and a resistance of 10 Ais suddenly connected to an ideal…

A: Given data The inductance of the coil is L = 1.5 H. The resistance of the coil is R = 10 Ω. The emf…

Q: 29. You can change the magnetic flux through a given surface by a. changing the magnetic field. b.…

A: The magnetic flux through a given surface is given by the formula Φ = B⋅A⋅cosθ, where B is the…