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5) I've got a uniform magnetic field of strength 180 ml. How quickly in terms of...
5) I've got a uniform magnetic field of strength 140 mT. How quickly in terms of frequency) must I spin a coil with resistance 10 ml and a radius of 3 cm in order to produce a 150 mA RMS-averaged current? Assume that the coil starts with its area fully exposed to the magnetic field. Answer:. Submit All Answers
5) I've got a uniform magnetic field of strength 100 mT. How quickly in terms of frequency) must I spin a coil with resistance 30 m 2 and a radius of 2 cm in order to produce a 140 mA RMS-averaged current? Assume that the coil starts with its area fully exposed to the magnetic field. Submit All Answers Last Answer: 0.11 Hz Answer: Incorrect, tries 1/20. Hint: Consider the flux as a function of time (it will look like...
can you please show me how to do each of these thank you! The magnetic field in the region between the poles of an electromagnet is uniform at any time, butis a point) increasing at the rate of 0.020 T/s. The area of the conducting loop in the field is 180 cm?. What is the magnitude of the induced emf? 0.12 mV 0.90 ml 0.11 mV 0:0.36 mV A rectangular loop with area A rotates with constant angular velocity o...
1) The armature of an ac generator is a rectangular coil 2.00 cm by 6.00 cm with 80 turns. It is immersed in a uniform magnetic field of magnitude 0.250 T. If the amplitude of the emf in the coil is 22.0 V, at what angular speed is the armature rotating? _______rad/s 2) The magnetic field between the poles of an electromagnet is 3.30 T. A coil of wire is placed in this region so that the field is parallel...
Helmholtz coils are frequently used in experiments because they create a uniform magnetic field about their axial direction. Ma Helmholtz coils are frequently used in experiments because they create a uniform magnetic field about their axial direction. For example, they are traditionally used in the experiment for the measurement of the charge to mass ratio of the electron. Helmholtz coils are two coils separated by a distance equal to their radius and also carry equal currents in the same direction,...
16. To generate a uniform 2T magnetic field for an MRI machine with a coil of diameter 50 cm and 10 000 turns over the 1 m distance of the coil, (a) Solve for the current through the coil needed to create this large magnetic field. 2 (b) Approximate the total length of wire needed to produce 10 000 turns of this radius. /2 (c) If we need to keep the resistive power emitted by this coil under 1000 W...
A coil 4.35 cm radius, containing 450 turns, is placed in a uniform magnetic field that varies with time according to B = (1.20x10-2 T/s)t + ( 3.20x10-5 T/s)t4. The coil is connected to a 540Ω resistor, and its plane is perpendicular to the magnetic field. You can ignore the resistance of the coil. Part A Find the magnitude of the induced emf in the coil as a function of time. Part B What is the current in the resistor at time to...
A coil 3.55 cm radius, containing 560 turns, is placed in a uniform magnetic field that varies with time according to B=( 1.20×10−2 T/s )t+( 2.65×10−5 T/s4 )t4. The coil is connected to a 630-Ω resistor, and its plane is perpendicular to the magnetic field. You can ignore the resistance of the coil. What is the current in the resistor at time t0 = 5.50 s? I=?
Problem 5: A 5 cm long wire is in a uniform magnetic field of 4T, so that current in the wire is perpendicular to the magnetic field. The wire is connected to a 10 ohm resistor in series, so that the resistance of the wire is negligible. The wire and resister are then connected in series to a charged 1500mF capacitor at 50 kV. A: What is the current through the wire as function of time, with t-0 being when...
A circular loop of wire with radius r-0.025 m and resistance R-0.3900 is in a region of spatially uniform magnetic field as shown. The magnetic field is directed into the plane of the figure, as shown. At t-o, B-O. The magnetic field then begins increasing with B-(0.380. What is the current (in mA) in the loop at the instant when 8-1.33 b. 18.5 c. 7.41 d. 13.2 12. In which direction is the current? a. Clockwise b. Counter Clockwise Explain...