A flat coil of wire has an area A, N turns, and a resistance R. It is situated in a magnetic field, such that the normal to the coil is parallel to the magnetic field. The coil is then rotated through an angle of 90˚, so that the normal becomes perpendicular to the magnetic field. The coil has an area of 1.5 × 10-3 m2, 50 turns, and a resistance of 150 Ω. During the time while it is rotating, a charge of 6.0 × 10-5 C flows in the coil. What is the magnitude of the magnetic field?

Q: You connect a battery, resistor, and capacitor as in (Figure 1), where R = 14.0 Ω and C = 3.00…

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Q: Consider a long, horizontal Large Wire with current of 10A flowing through it. We want to levitate a…

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Q: When the switch S is toggled to the left, the capacitor C charges through the resistor R. When the…

A: Resistor used for charging VC=ε1-e-tRCR=-tCln1-VCε=-1.30 s8.50 μFln1-755 V1260 V1 μF10-6 F=1.67×105…

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A: When the switch is in position A , the capacitor charges. After charging for a long time, the…

Q: Chapter 30, Problem 054 In the figure, ε = 118 V, R₁ = 14.9 №, R₂ = 21.3 N, R3 = 35.8 №, and L= 1.90…

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Q: The figure below shows a capacitor, with capacitance C = 20.0 µF, and a resistor, with resistance R…

A: C = 20μFR = 75k.ohm = 75000 ohm E = 21 volts

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A: Given:-  The terminal voltage is ε= 8.30 V  The current reaches half of its maximum value of current…

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Q: In a new lab experiment, two parallel vertical metal rods are separated by L= 0.60 m. A R = 2.0Ω…

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Q: A battery with E = 7.80 V and no internal resistance supplies current to the circuit shown in the…

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Q: A battery with Ɛ = 4.80 V and no internal resistance supplies current to the circuit shown in the…

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Q: A flat coil of wire has an area A, N turns, and a resistance R. It is situated in a magnetic field,…

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Q: The electrical signals to the heart are typically coordinated to create a wave of compression that…

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Q: A galvanometer has a coil resistance of Rgalv=97.2 Ω. It is to be made into an ammeter with a…

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Q: A circular loop made of copper wire with a diameter 0.96 mm is placed in a uniform magnetic field…

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Q: A battery with Ɛ = 8.60 V and no internal resistance supplies current to the circuit shown in the…

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Q: MRI: Magnetic resonance imaging (MRI) uses a very strong magnet to create an image. The maximum…

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Q: In the figure, e = 94.8 V, R1 = 7.80 Q, R2 = 27.0 Q, R3 = 30.7 Q, and L = 1.65 H. Immediately after…

A: Since we answer up to three subparts, we will answer the first three. Please resubmit the question…

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A: Given data: Angular speed =2.5 rev/sec ε0=55 v w0=1600 rev/min ε=8 v Find: Average back emf of the…

Q: d , P 3,

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Q: The capacitor in the circuit shown below is initially uncharged. The switch is closed at t = 0 s.…

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Q: In the figure R1 = 9.81 kΩ, R2 = 15.4 kΩ, C = 0.433 μF, and the ideal battery has emf ε = 18.0 V.…

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Q: In the circuit shown in the figure, all five resistors have the same value, 100 Ω, and each cell has…

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Q: & = 24.0 V 0.10 n R, 5.0 2 R S20 2 E2- 48.0 V R 0.50 2 40 2 R 78 2 Ez- 6.0 V E 36.0 V Write the…

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Q: A copper wire with a square cross-section (side length 5.00 µm) is next to an iron wire with a…

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Q: The figure below shows a piece of insulated wire formed into the shape of a figure eight. You may…

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Q: In the circuit of the figure = 4.00 kV, C = 7.70 μF, R1 = R2 = R3 = 0.930 MΩ. With C completely…

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Q: The figure shows four arrangements in which long, parallel, equally spaced wires carry equal…

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Q: Two very long, parallel wires are separated by d = 0.065 m. The first wire carries a current of I1 =…

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Q: A copper wire is 10.00 m long and has a cross-sectional area of 2.00 ✕ 10-4 m2. This wire forms a…

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Q: 3. In the circuit of the figure, ɛ1 =1.5 kV, C = 6.0 µF, R1 = R2 = R3 = 0.82 MQ. With C completely…

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Q: Chapter 27, Problem 063 In the circuit of the figure 8 = 4.20 kV, C = 7.90 µF, R₁ = R₂ = R3 = 1.01…

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Q: (a) How much current flows through the motor when it is running smoothly? (b) Suddenly the string…

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Q: A conducting rod slides on two parallel conducting bars as shown below. The bars are connected…

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Q: of 202/cm. The rod moves to the left at v= 4 m/s. If B = 0.75 the current in the circuit (a) when a…

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Q: A 11.8 ?F capacitor is charged by a 25.0 V battery through a resistance R. The capacitor reaches a…

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Q: A loop of wire moves with a velocity of 3.0 m/sm/s through a magnetic field whose strength decreases…

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Q: in the loop? Provide both the magnitude and direction of the current (as viewed from above the…

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Q: ch S is closed at t = 0. (a) When the voltage across the capacitor is 8.00 V, what is the magnitude…

A: In the figure, We have given  ε= 36.0 V  C = 5.0 μF = 5.0 x 10-6 F  R = 120 ohms  Find:-  (a) When…

Electromagnets

The word "electromagnet" is composed of two words, ‘electro’ and ‘magnet’. It is a type of magnet in which an electric current helps in the generation of a magnetic field. Electromagnets usually consist of two major parts, wire and a coil around which the wire is wound. This is called a solenoid. When an electric current is allowed to pass through the coiled wire, the electric current produces a magnetic field. This magnetic field is present only when current is passing through the wire.