A solenoid has a radius of 3.5 cm, 160 turns and a length of 1.2 m. Take the solenoid to have negligible (zero) resistance. The terminals of the solenoid are connected across a 15 Ω resistor at time zero and the circuit is given an initial current of 55 mA. a) How long will it take for the current to drop to 12mA? b) At time zero, just after the current in the circuit is initiated, what is the energy stored in the solenoid and what is the voltage across the solenoid?

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A: Inductance of the solenoid L=14 mH=14*10-3H, it is charged up from current I1=3 A to I2=7 A in a…

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Q: A solenoid with 425 turns has a length of 5.50 cm and a cross-sectional area of 2.60 ✕ 10−9 m2. Find…

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Q: 2. A solenoid of length 5 cm has 200 loops, and radius r=0.5 cm. It has an internal resistance R, =…

A: Hello. Since your question has multiple sub-parts, we will solve first three sub-parts for you. If…

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Q: A solenoid with 455 turns has a length of 6.50 cm and a cross-sectional area of 3.50 ✕ 10−9 m2. Find…

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Q: A solenoid having an inductance of 7.82 uH is connected in series with a 1.68 kN resistor. (a) If a…

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A: Given: The inductance is L=12 H. The resistance is R=4 Ω . The voltage is E=240 V.   The…

Q: A solenoid has 45000 turns/m and diameter of 2.3 cm. If the current varies with time as I=24 t -…

A: 36) Self inductance = μo N2A/L Self inductance per unit length = 4π * 10-7 * (45000)2 * π*…

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Q: A solenoid with 495 turns has a length of 5.00 cm and a cross-sectional area of 2.90 ✕ 10−9 m2. Find…

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Q: 5. A 500 turns solenoid develops an average induced voltage of 60 V. Over what time interval must a…

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Q: A solenoid with 455 turns has a length of 8.00 cm and a cross-sectional area of 2.70 ✕ 10−9 m2. Find…

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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.