"A single loop of wire of area 0.1 m2 is placed perpendicular to a magnetic field of intensity 2 T, as shown in the figure.х х х х х хXх хX XXXх х хх х хх х хQUESTION 11"What is the magnitude of the induced emf, if the field intensity halves in 0.1 second?"O oO 0.2 vO 2 v20 vO None of these

Area of single loop of wire (A) = 0.1 m2Magnetic field intensity (B) = 2 T time taken to reduce the…

"A single loop of wire of area 0.1 m2 is placed perpendicular to a magnetic field of intensity 2 T, as shown in the figure. х х х х х х х х х х X X X X X х х х х х х QUESTION 11 "What is the magnitude of the induced emf, if the field intensity halves in 0.1 second?" O o O 0.2 v O 2 v 20 v O None of these

"A single loop of wire of area 0.1 m2 is placed perpendicular to a magnetic field of intensity 2 T, as shown in the figure. х х х х х х х х х х X X X X X х х х х х х QUESTION 11 "What is the magnitude of the induced emf, if the field intensity halves in 0.1 second?" O o O 0.2 v O 2 v 20 v O None of these

Glencoe Physics: Principles and Problems, Student Edition

1st Edition

ISBN:9780078807213

Author:Paul W. Zitzewitz

Publisher:Paul W. Zitzewitz

Chapter25: Electromagnetic Induction

Section: Chapter Questions

Problem 4STP

See similar textbooks

Similar questions

Suppose that a rectangular toroid has 2000 windings and a self-inductance of 0.040 H. If h = 0.10 m, what is the current flowing through a rectangular toroid when the energy in its magnetic field is 2.0 × 10-6 J?
A metal bar of length 25 cm is placed perpendicular to a uniform magnetic field of strength 3 T. (a) Determine the induced emf between the ends of the rod when it is not moving, (b) Determine the emf when the rod is moving perpendicular to its Length and magnetic field with a speed of 50 cm/s.
To monitor the breathing of a hospital patient, a thin belt is girded around the patients chest as in Figure P20.21. The belt is a 200-turn coil. When the patient inhales, the area encircled by the coil increases by 39.0 cm2. The magnitude of Earths magnetic field is 50.0 T and makes an angle of 28.0 with the plane of the coil. Assuming a patient takes 1.80 s to inhale, find the magnitude of the average induced emf in the coil during that time. Figure P20.21
A circular loop of wire with a radius of 4.0 cm is in a uniform magnetic field of magnitude 0.060 T. The plane of the loop is perpendicular to the direction of the magnetic field. In a time interval of 0.50 s, the magnetic field changes to the opposite direction with a magnitude of 0.040 T. What is the magnitude of the average emf induced in the loop? (a) 0.20 V (b) 0.025 V (c) 5.0 mV (d) 1.0 mV (e) 0.20 mV
A thin conducting bar (60.0 cm long) aligned in the positive y direction is moving with velocity v=(1.25m/s)i in a region with a spatially uniform 0.400-T magnetic field directed at an angle of 36.0 above the xy plane. a. What is the magnitude of the emf induced along the length of the moving bar? b. Which end of the bar is positively charged?
A 50-turn coil has a diameter of 15 cm. The coil is placed in a spatially uniform magnetic field of magnitude 0.50 T so that the face of the coil and the magnetic field are perpendicular. Find the magnitude of the emf induced in the coil if the magnetic field is reduced to zero uniformly in (a) 0.10 s, (b) 1.0 s, and (c) 60 s.
Is Ampere’s law valid for all closed paths? Why isn’t it normally useful for calculating a magnetic field?
A 10-H inductor carries a current of 20 A. How much ice at 0ºC could be melted by the energy stored in the magnetic field of the inductor? (Hint: Use the value Lf= 334 J/g for ice.)
In a 250-turn automobile alternator, the magnetic flux in each turn is B, = 2.50 104 cos t, where is in webers, is the angular speed of the alternator, and t is in seconds. The alternator is geared to rotate three times for each engine revolution. When the engine is running at an angular speed of 1.00 103 rev/min, determine (a) the induced emf in the alternator as a function of time and (b) the maximum emf in the alternator.