Question
Two concentric circular coils of wire lie in a plane. The larger coil has 38 turns and a radius of a = 8.60 cm. The smaller coil has 42 turns and a radius of b = 0.50 cm. The current in the larger coil has a time dependence as shown in the figure.
What is the magnitude of the EMF induced in the small coil at t = 2, t = 5 and t = 8?
Expert Solution
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
This is a popular solution
Trending nowThis is a popular solution!
Step by stepSolved in 3 steps
Knowledge Booster
Similar questions
- The figure below displays a circular loop of conducting wire in a uniform magnetic field pointing into the page. The radius of the loop is 10.0 cm and the magnitude of the field is 0.160 T. You grab points A and B and pull them in opposite directions, stretching the loop until its area is nearly zero, taking a time of 0.170 s to do so. What is the magnitude of the average induced emf in the loop (in mV) during this time? * х * X x х A x * * x K mV X x * x. B * * *arrow_forwardA toroidal solenoid with a rectangular cross-section is wound uniformly with 480 turns. The inner radius is a=5 cm, the outer radius is b=7.5 cm, and it has a thickness of t=1 cm. What is the self-inductance of this device?arrow_forwardA 2.00 cm diameter, 14.0 cm long solenoid has 60.0 turns and has a 1.00 cm diameter loop inside it. The loop has a resistance of 0.400 Ω. What is the current in the loop at 0.00600 s? The the maximum and the minimum current in the graph have the same magnitude which is 3.60 A.arrow_forward
- A 95 turn, 10.0 cm diameter coil rotates at an angular velocity of 8.00 rad/s in a 1.30 T field, starting with the normal of the plane of the coil perpendicular to the field. Assume that the positive max emf is reached first. a) What (in V) is the peak emf? b) At what time (in s) is the peak emf first reached? c) At what time (in s) is the emf first at its most negative? d) What is the period (in s) of the AC voltage output?arrow_forwardIn the figure, R = 11.0 Ω, C = 6.82 μF, and L = 54.0 mH, and the ideal battery has emf = 32.0 V. The switch is kept in position a for a long time and then thrown to position b. What are the (a) frequency and (b) current amplitude of the resulting oscillations?arrow_forwardIn the figure, a 140-turn coil of radius 1.8 cm and resistance 7.3 Ω is coaxial with a solenoid of 220 turns/cm and diameter 2.5 cm. The solenoid current drops from 1.7 A to zero in time interval Δt = 31 ms. What current is induced in amperes in the coil during Δt?arrow_forward
- An 8 cm long solenoid has 71 windings and a circular cross section of radius a=1.4 cm. The solenoid goes through the center of a circular coil of wire with 40 windings and radius b=6 cm. The current in the circular coil changes according to i(t)=4t2+4.5t. What is the mutual inductance of the coil and solenoid? What is the magnitude of the emf induced in the solenoid at t=4 s?arrow_forwardA generator uses a coil that has 370 turns and a 0.49-T magnetic field. The frequency of this generator is 60.0 Hz, and its emf has an rms value of 120 V. Assuming that each turn of the coil is a square (an approximation), determine the length of the wire from which the coil is made. B N Number Units Sarrow_forwardConsider a 12-loop coil with a diameter of 8 cm; a north-leading bar magnet moves further away from the coil (where the bar magnet is perpendicular to the cross section of the coil, and the north pole is closest to the coil as the magnet moves away). The magnetic field value changes from 0.065 T to 0.00065 T in 1.6 s. What is the induced emf for the coil? emf = Varrow_forward
arrow_back_ios
arrow_forward_ios