College Physics
11th Edition
ISBN: 9781305952300
Author: Raymond A. Serway, Chris Vuille
Publisher: Cengage Learning
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- A circular loop in the plane of the page/screen lies in a 0.65T magnetic field pointing into the page/screen. The loop's diameter changes from 20.0cm to 6.0cm in 0.50s. What is a) The formula you use to solve this problem? b) the direction of the indiuced current? c) the magnitude of the average induced emf? d) the average induced current if the coil resistance is 2.5ohms?arrow_forwardA solenoid with 1000 turns of insulated wire in a length of 40 cm has a diameter of 20 cm. An alternating current through the coils has a value of 120 Amps/sec. Calculate the value for the change in magnetic field inside the solenoid, the changing flux in the solenoid and the Induced EMF which results. a) Calculate the time rate of change of magnetic field in the solenoid for the given values above. b)Considering the Area and total number of coils in the solenoid, find the EMF generated while the magnetic field is changing.arrow_forwardThe magnetic flux through a 730-turn coil depends on time according to (1) = 4x 10- Tm 2 in which the time is in seconds. Calculate the absolute value of the emf induced at time t = 2.88 s, in volts. s2arrow_forward
- A conducting bar sits on top of two parallel rails. A uniform magnetic field B is steady and directed to the right. The bar moves upward with velocity v. What is the polarity of the induced emf in terminals X and Y? X Y O X and Y are at the same potential. X is positive and Y is negative. O Y is positive and X is negative. 1-1arrow_forwardCAN YOU HELP WITH 4A AND SUBQUESTION 4B PLEASE 4a. Suppose a 42–turn coil lies in the plane of the page in a uniform magnetic field that is directed into the page. The coil originally has an area of 0.290 m2. It is stretched to have no area in 0.100 s. What is the magnitude of the induced emf if the uniform magnetic field has a strength of 1.70 T? 4b. What is the direction of induced emf? A. CCW B. CW THIS IS NOT AND WILL NOT BE GRADEDarrow_forwarduber eats driver-completes her route by traveling 167 m in a direction 30⁰ north of east, 140 m 20 ⁰ west of north, and then 180 m west. What is her final location (magnitude and direction) relative to her starting location?arrow_forward
- Current Attempt in Progress A circular coil (720 turns, radius = 0.084 m) is rotating in a uniform magnetic field. At t=0 s, the normal to the coil is perpendicular to the magnetic field. At t = 0.021 s, the normal makes an angle of 45° with the field because the coil has made one-eighth of a revolution. An average emf of magnitude 0.048 V is induced in the coil. Find the magnitude of the magnetic field at the location of the coil. Number Unitsarrow_forwardO Resources Give Up O Hint A 145 turn circular coil of radius 2.29 cm is immersed in a uniform magnetic field that is perpendicular to the plane of the coil. Over an interval of 0.169 s, the magnetic field strength increases from 55.7 mT to 99.3 mT. Find the magnitude of the average emf Eve induced in the coil during this time interval, in millivolts. Eve = mVarrow_forwardA 1.95 m length of wire is held in an east-west direction and moves horizontally to the north with a speed of 14.8 m/s. The vertical component of Earth's magnetic field in this region is 40.0 µµT directed downward. Calculate the induced emf between the ends of the wire and determine which end is positive. magnitude mv positive end ---Select-- v Need Help? Read Itarrow_forward
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