A long solenoid with 2000 turns/m and a total resistance of R=1.5 Ω is connected to a battery of ε=54 V. Find the magnetic field B (in mT) in the solenoid.
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A long solenoid with 2000 turns/m and a total resistance of R=1.5 Ω is connected to a battery of ε=54 V. Find the magnetic field B (in mT) in the solenoid.
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- The slide generator in the figure below is in a uniform magnetic field of magnitude 0.0500 T. The bar of length 0.345 m is pulled at a constant speed of 0.500 m/s. The U-shaped conductor and the bar have a resistivity of 2.75 x 10-8 · m and a cross-sectional area of 8.50 x 10-4 m². Find the current in the generator when x = 0.680 m. (Note that the A in the image below is the area of the loop, not the cross-sectional area of the conductor and bar.) 313600 X Your response differs significantly from the correct answer. Rework your solution from the beginning and check each step carefully. A Bulb is unlit. A. B. Bulb is lit. loo F mechA long solenoid that has 820 turns uniformly distributed over a length of 0.390 m produces a magnetic field of magnitude 1.00 x 10-4 T at its center. What current is required in the windings for that to occur? mAHow much energy is stored in the magnetic field of a 20.0-cm-long solenoid that has 156 turns and a radius of 0.950 cm and carries a current of 1.65 A?
- A solenoid in your car is 36 cm long and has a diameter of 7.9 cm. It is made of copper wire with a radius of 0.50 mm. The turns are closely packed and form a single layer. Assume the resistivity of copper is 1.68 ✕ 10−8 Ω · m. (a) When the solenoid is connected to your battery with E = 11.6 V, what is the magnetic field inside the solenoid? (Enter the magnitude.) TA square wire loop (side length 1.5 m) is oriented so that it is perpendicular to an external magnetic field B, with half the area of the loop embedded in the field, as shown below. The loop contains a battery with a constant emf Eb = 7.2 V and a resistor R = 3.2 Ω. The external magnetic field is B(t) = [0.027 T − (0.56 T/s) t] î where î is out of the page. (a) Findtheemfproducedbyinductionintheloop. (b) Findthenetcurrentintheloopfromboththeinducedemfandthebattery. (c) What direction is the current in? (a) Findtheemfproducedbyinductionintheloop. (b) Findthenetcurrentintheloopfromboththeinducedemfandthebattery. (c) What direction is the current in? (a) Find the emf produced by induction in the loop. (b) Find the net current in the loop from both the induced emf and the battery. (c) What direction is the current in?You've decided to make a magnetic projectile launcher for your science project. An aluminum bar of length l = 5.19 cm slides along metal rails through a magnetic field B = 0.664 T. The switch closes at t = 0 s , while the bar is at rest, and a battery of emf = 16.50 V starts a current flowing around the loop. The battery had internal resistance, r = 0.139 Ω. The resistance of rails and the bar are effectively zero. What is the terminal speed (in m/s) of the bar?
- A solenoid that is 125 cm long has a radius of 2.63 cm and a winding of 1240 turns; it carries a current of 5.22 A. Calculate the magnitude of the magnetic field inside the solenoid.A solenoid is 15 cm long, has a radius of 5 cm, and has 400 turns. If it carries a current of 4 A, the magnetic energy stored in the solenoid is Group of answer choices 12.6 mJ 84.2 mJ 0.562 J 3.37 J None of these is correct.