Question

A square, single-turn wire loop ! - 1.00 cm on a side is placed inside a solenoid that has a circular cross section of radius - 3.00 cm, as shown in the end view of the figure below. The solenoid is 22.5 cm long and wound with 112 turns of wire. (a) If the current in the solenoid is 3.85 A, what is the magnetic flux through the square loop? (b) If the current in the solenoid is reduced to zero in 285 s, what is the magnitude of the average Induced emf in the square foop? Additional Materials eBook (-12 points) DETAILS SERCP10 20.P.024 MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER A 1.55 m length of wire is held in an east-west direction and moves horizontally to the north with a speed of 14.9 m/s. The vertical component of Earth's magnetic field in this region is 40.0 T directed downward. Calculate the induced emf between the ends of the wire and determine which end is positive. magnitude mv positive end Sinh Additional Materials Book [-/3 Points] DETAILS SERCP10 20.P.043 MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER An electromagnet can be modeled as an inductor in series with a resistor Consider a large electromagnet of Inductance 1 - 15.0 H and resistance R6.50 connected to a 12.0-V battery and switch as in the figure shown below. After the switch is closed, find the following (a) the maximum current carried by the electromagnet (b) the time constant of the circuit (c) the time it takes the current to reach 95.0% of its maximum value

Answer 1

Soll d=1cm R = 3cm La 22.5 cm solenoid torns 12 = 12 Sslenoid I = 3.85A Ne, et Current in the magnetic field B = llo NZ L X 3.85 = unxio? 8 112 22.58162 240.7410 - 5 B = Z (9) the flow through square loop is a 240.78105 x 12 8= BA = 240.7 8105 XIXIXIOY 2 Im? required flur 0 24.07 (6) the change in wrsefnt Ä 3.85 in. 2.85 sel so I 1.35 3-85 2.85 st

the square re loop Emd incluced in any. Emd=ad A AB at st A MONI AI Z It Emt = 1x10 4 X 45X10? x 112 x 1:35 22-58102 Emt 8.44 Volt Induced Emd.
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