Physics 11. A coil is wrapped with 300 turns of wire on the perimeter of a circular frame (radius = 8.0 cm). Each turn has the same area, equal to that of the frame. A uniform magnetic field is turned on perpendicular to the plane of the coil. This field changes at a constant rate from 20 to 80 mT in a time of 20 ms. What is the magnitude of the induced emf in the coil at the instant the magnetic field has a magnitude of 50 mT?   a.  24 V   b.  18 V   c.  15 V   d.  10 V   e.  30 V

Q: 6. A 10 cm long rod is placed on two parallel rails so that it completes a loop. This device is…

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Q: 000 0000000000 OOOOO0.0 What is the length of the rod? m DO DO *o0||0000000000 A rod is moving from…

A: Solution: Given: A rod is sliding on the parallel rails. The system is placed in magnetic field. The…

Q: The figure below shows a 108-turn square coil rotating about a vertical axis at at = 1,570 rev/min.…

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Q: Suppose a 50-turn coil lies in the plane of the page in a uniform magnetic field that is directed…

A: Given: Turns in coil N = 50 Cross sectional area of coil A = 0.25 m2. dAdt=0.250.1dAdt=2.5 m2/s…

Q: A single loop of copper wire, lying flat in a plane, has an area of 7.20 cm2 and a resistance of…

A: As the magnetic field flux changes through a loop this induces and emf in the lopp  which in turn…

Q: A single loop of steel wire, lying flat in a plane, has an area of 7.80 cm2 and a resistance of 2.10…

A: Answer is given below:  Explanation:Question 1:Answer:

Q: Problem A. A single turn coil of radius 7.00 cm is held in a vertical plane and a magnet is rapidly…

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Q: A circular coil of wire with radius 5cm and 25 turns is placed in a uniform magnetic field of…

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Q: A 3.0-cm by 5.0-cm rectangular coil has 100 turns. Its axis makes an angle of 55º with a uniform…

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Q: An L = 47.0 cm wire is moving to the right at a speed of v = 7.10 m/s across two parallel wire rails…

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Q: In the figure, a wire shaped like a circular loop of radius r =15.0 cm is stretched by pulling on…

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Q: single loop of steel wire, lying flat in a plane, has an area of 8.20 cm² and a resistance of 1.50…

A: Area of the loop ResistanceInitial magnetic FieldFinal magnetic fieldTime interval

Q: A loop of wire sits in an external magnetic field as shown (in other words, the field shown in the…

A: Let B1 and B2 denote the initial and the final magnetic field, ϕ1 and ϕ2 denote the initial and the…

Q: The figure below shows a 102-turn square coil rotating about a vertical axis at at w = 1,280…

A: The number of turns N = 102The angular frequency ω = 1200 rev/min or f = 20 rev/s = 20HzThe length…

Q: directed perpendicular to the plane of the coil. Calculate the magnitude of the average emf that is…

A: Given value--- no of turns = 53 . dimension = 5 cm × 10 cm . magnetic field = 0 T to 0.510 T . time…

Q: A loop of wire with a diameter of d=0.71 m lies in a plane perpendicular to a magnetic field with…

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Q: A circular loop of wire with a radius of 4.0 cm is in a uniform magnetic field of magnitude 0.061 T.…

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Q: A rocker arm with rollers at A and B is shown in the position when the valve is open and the valve…

A: Solution:-

Q: The figure below shows a 114-turn square coil rotating about a vertical axis at at w = 1,210…

A: Ans a: 11.5 mvAns b: the plane of the coil is parallel to the magnetic field.Explanation:

Q: A single loop of steel wire, lying flat in a plane, has an area of 7.20 cm² and a resistance of 2.10…

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Q: A loop of wire with 200 turns and an area of 0.20 m² is placed so the plane of the loop is…

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Q: A single loop of copper wire, lying flat in a plane, has an area of 7.20 cm? and a resistance of…

A: Area of copper wire A = 7.20 cm2 = 7.20 × 10- 4 m2 Resistance of copper wire R = 2.10 Ω Initial…

Q: The magnetic field through a circular loop of radius r=15cm varies with time.The direction of the…

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Q: A single loop of copper wire, lying flat in a plane, has an area of 8.60 cm² and a resistance of…

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Q: A square loop made of a metal wire is placed on the page. The length of both sides of the square…

A: Initial side length (s0): 4.0 cm = 0.04mFinal side length(sf): 3.0 cm = 0.03mChange in time (t): 25…

Q: Two moving rods of equal lengths (1.20 m) are moving as shown in the figure. The speed v1 = 1.10 m/s…

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Q: A circular coil of wire 7.8 cm in diameter has a resistance of 1.61 2. It is located in a magnetic…

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Q: starting with the normal of the plane of the coil perpendicular to the field. Assume that the…

A: Induced emf in any generator E = Eo sinwt Where Eo = peak emf = NABW W = angular speed B= magnetic…

Q: The ring is oriented so that the magnetic field passes directly through the ring. It moves such that…

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Q: A single loop of steel wire, lying flat in a plane, has an area of 7.80 cm² and a resistance of 1.80…

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Q: A 0.300 mm diameter copper wire makes up a 85.0 turns, 7.90 cm diameter coil. There is a magnetic…

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Q: What is the induced current (in mA) in the loop of wire over this time?

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Q: An electromagnet is turned on to produce a magnetic field that stabilizes at 3 T after 0.5 s. A…

A: Field, B = 3 T Time, t = 0.5 s Radius, r = 0.1 m Number of turn, N = 1

Q: A single loop of copper wire, lying flat in a plane, has an area of 7.40 cm2 and a resistance of…

A: Area of the loop A=7.40 cm2 ResistanceR=1.80 Ω Initial magnetic FieldBi=0.500 T Final magnetic…

Q: A single loop of copper wire, lying flat in a plane, has an area of 8.40 cm² and a resistance of…

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Q: The figure below shows a 117-turn square coil rotating about a vertical axis at at w = 1,460…

A: Given data: The number of turns is N=117 Rotational speed is ω=1460 rev/min. Side of square is a=20…

Q: A square coil of wire has 10 turns and an area of 20 cm^2. The square coil is located in a variable…

A: Number of turns (N) = 10 turns Area of each turn (A) = 20 cm2θ = 45oThe magnetic field is plotted…