58 minutes A coil with an inductance of 19.4 H and a resistance of 2.2 2 is suddenly connected to a resistanceless battery with an = 82.0 V. At 0.51 s after the connection is made, what is the rate at which energy is being stored in the magnetic field? Submit Answer Tries 0/10 What is the rate at which thermal energy is appearing, Submit Answer Tries 0/10 What is the rate at which energy is being delivered by the battery?
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- A circular coil of 50 turns and radius 8.0cm is placed with its plane oriented at 90 degrees to a magnetic field of .20 T. the field is now increased at a steady rate, reaching a value of .80T after 3.0 seconds. What emf is induced in the coil? a. 40V b. 0V c. 0.20V d. 0.0040V e. 2010VA 11.7 cm long rod moves at 3.99 (m/sec). What is the strength of magnetic field if a 94.8 V emf is induced.Give your answer in SI units and to three significant figures. D Question 1 Two lenses are placed a distance of 20.0 cm apart. The leftmost lens is a converging lens with a focal length of 6 cm while the seconds lens is a diverging lends with a focal length of 10. If an object is placed 2 cm to the left of the converging lens, determine the magnification of the two lenses combined.
- A circular loop in the plane of the paper lies in a 0.60 T magnetic field pointing into the paper. The resistance of the coil is 1.55 Ω. If the loop's diameter changes from 20.5 cm to 9.00 cm in 0.40 s, what is the average induced current in milli-amps?A bicycle generator rotates at 1,975 rad/s, producing a 17.5 V peak emf. It has a 46-turn, 1.00 by 3.00 cm rectangular coil in a 0.640 T field. It is driven by a 1.76 cm diameter wheel that rolls on the outside rim of the bicycle tire. (a) What is the velocity of the bicycle? (Enter the magnitude in m/s.) m/s (b) What is the maximum emf (in V) of the generator when the bicycle moves at 10.0 m/s, noting that it was 17.5 V under the original conditions? V (c) If the sophisticated geherator can vary its own magnetic field, what field strength (in T) will it need at 5.00 m/s to produce a 9.00 V maximum emf?An emf of 60.21 mV is induced in a 200-turn coil when the current is changing at the rate of 11.5 A/s. What is the magnetic flux through each turn of the coil at an instant when the current is 6 A?
- A 10 H inductor carries a current of 20 A. the magnetic field of the inductor? Latent heat of ice is How much ice at 0° C could be melted by the energy stored in 22.6x 10°J/kg.The 1300-turn coil in a dc motor has an area per turn of 2.4 × 10-2 m2. The design for the motor specifies that the magnitude of the maximum torque is 7.8 N·m when the coil is placed in a 0.19-T magnetic field. What is the current in the coil?A bicycle generator rotates at 1,800 rad/s, producing a 15.5 V peak emf. It has a 45-turn, 1.00 by 3.00 cm rectangular coil in a 0.640 T field. It is driven by a 1.48 cm diameter wheel that rolls on the outside rim of the bicycle tire. (a) What is the velocity of the bicycle? (Enter the magnitude in m/s.) m/s (b) What is the maximum emf (in V) of the generator when the bicycle moves at 10.0 m/s, noting that it was 15.5 V under the original conditions? V (c) If the sophisticated generator can vary its own magnetic field, what field strength (in T) will it need at 5.00 m/s to produce a 9.00 V maximum emf?
- The magnetic field through a single loop of wire 14.0 cm in radius and of 11.5 Ω resistance changes with time as shown in the figure. Calculate the emf in the loop as a function of time. a)What is the emf at t = 1.0 s? For the sign take the loop in the plane of the paper, and the magnetic field out of the paper. Take clockwise to be positive emf. b)What is the emf at t = 3.0 s? c)What is the emf at t = 5.0 s? d)What is the current at t = 1.0 s?A generator is made from a set of 50 wire loops of radius 40.0 cm that turn in a uniform 0.0900 T magnetic field. What frequency of rotation is needed to supply a peak emf of 85.0 V?.