For a coil of unit area, induction is doubled in 0.2s. Then the induced e.m.f. is (a) 5 B (b) 10 B (c) 8 B (d) 4 B
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- An inductor consists of 100 turns of wire tightly wound about an insulating core. It is attached to a power supply and when the current through it is increased from 0 to 5 A in 3, s an induced emf of 5 V is measured. Find the inductance of this device and the magnetic flux and the energy stored in the magnetic field when the current is held steady at 5 A.Sign in to O X Interval Spo X O Apr. 9: Fara X O Faraday.pdf x Faraday.pdf x HW 19 in mechanical X M (no subject) x PDF File | C:/Users/Colin/Downloads/Faraday.pdf 2) A rectangular coil with resistance R has N turns (loops), each of length e and width w as shown in the figure. The coil moves into a uniform magnetic field B with constant velocity v. Find the magnitude and direction of the total magnetic force on the coil (a) as it enters the magnetic field (i.e. partially immersed), and (b) as it moves (totally immersed) within the magnetic field. B. Pexternal 8:08 AM O Type here to search 62% hulu 4/9/2021 7.Question 3: Induction (a) The accompanying figure shows a single-turn rectangular coil that has a resistance of 2.0/2. The magnetic field at all points inside the coil varies according to B = Boe-at, where Bo = 0.25T and a = 200Hz. What is the current induced in the coil at (a) t = 0.001s, (b) 0.002 s, (c) 2.0 s? x x x x x X X 5.0 cm X x x X x x X X x B x 2.0 cm X (b) How would the answers to the preceding problem change if the coil consisted of 20 closely spaced turns? Note that the resistance would increase by 2.00 per coil as well.
- What is the induced emf in the below coil if it is moving upward at 4.2 m/s in a uniform magnetic field of magnitude 0.82 T? What if instead, the field decreased as 0.82e-3t T over 0.1 s, now what is the induced emf? Also which way does the ENC go?A 42 turn conductive loop encloses an area of 0.68 m2. At what constant rate should the magnetic field directed perpendicular to the loop change with time if the induced emf is to be 3.6 Volts? Consider only positive numbers here in your answer.