A magnetic field is perpendicular to the plane of a single-turn circular coil. The magnitude of the field is changing, so that an emf of 0.87 V and a current of 3.8 A are induced in the coil. The wire is then re-formed into a single-turn square coil, which is used in the same magnetic field (again perpendicular to the plane of the coil and with a magnitude changing at the same rate). What (a) emf and (b) current are induced in the square coil?
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- An emf is induced by rotating a 1000 turn, 18 cm diameter coil in the Earth’s 5.00 × 10-5 T magnetic field. What average emf (in volts) is induced, given the plane of the coil is originally perpendicular to the Earth’s field and is rotated to be parallel to the field in 15 ms?A 34-turn circular coil of wire has diameter 0.92 m. It is placed with its axis along the direction of the Earth's magnetic field of 41.0 µT and then in 0.200 s is flipped 180°. An average emf of what magnitude is generated in the coil?A square coil of wire of side 2.55 cm is placed in a uniform magnetic field of magnitude 1.75 T directed into the page as in the figure shown below. The coil has 24.0 turns and a resistance of 0.780 N. If the coil is rotated through an angle of 90.0° about the horizontal axis shown in 0.335 s, find the following. Rotation axis (a) the magnitude of the average emf induced in the coil during this rotation Your response is off by a multiple of ten. mV .(b).the.axerage.current induced in the coil during this rotation Enter a number. is off by a multiple of ten. mA × × × × x xx x
- An electric generator contains a coil of 100 turns of wire, each forming a rectangular loop 50.0 cm by 30.0 cm. The coil is placed entirely in a uniform magnetic field with magnitude B = 3.50 T and initially perpendicular to the coil's plane. What is the maximum value of the emf produced when the coil is spun at 1000 rev/min about an axis perpendicular to B? Give your answer in kV.A 32-turn circular coil of wire has diameter 0.91 m. It is placed with its axis along the direction of the Earth's magnetic field of 42.0 µT and then in 0.200 s is flipped 180°. An average emf of what magnitude is generated in the coil?A wire coil has 156 turns and sits in an externally applied steadily changing magnetic field that is perpendicular to the plane in which the coil rests. The magnetic field changes at a rate of 5.14 T/s and as a result, a 6.26 V EMF is induced in the coil. If the magnetic field is made to change at a rate of 8.76 times the original rate of change, what will the induced voltage on the coil be?
- Consider a conducting rod of length 28 cm moving along a pair of rails, and a magnetic field pointing perpendicular to the plane of the rails. At what speed (in m/s) must the sliding rod move to produce an emf of 1.1 V in a 1.25 T field?A magnetic field is perpendicular to the plane of a single-turn circular coil. The magnitude of the field is changing, so that an emf of 0.85 V and a current of 2.5 A are induced in the coil. The wire is then re-formed into a single-turn square coil, which is used in the same magnetic field (again perpendicular to the plane of the coil and with a magnitude changing at the same rate). What (a) emf and (b) current are induced in the square coil? (a) Number i (b) Number i Units UnitsA square, single turn coil of length 0.02m is placed with its plane perpendicular to a constant magnetic field. An emf of 18mV is induced in the windings of the coil when the area of the coil decreases at a rate of 0.10m^2/s. What's the magnitude of the magnetic field?
- A coil of 1000 turns encloses an area of 25 cm2 . It is rotated in 0.010 s from a position where its plane is perpendicular to Earth’s magnetic field to one where its plane is parallel to the field. If the strength of the field is 6.0 × 10−5 T, what is the average emf induced in the coil?A magnetic field is perpendicular to the plane of a single-turn circular coil. The magnitude of the field is changing, so that an emf of 0.61 V and a current of 2.1 A are induced in the coil. The wire is then re-formed into a single-turn square coil, which is used in the same magnetic field (again perpendicular to the plane of the coil and with a magnitude changing at the same rate). What (a) emf and (b) current are induced in the square coil?An electric generator contains a coil of 100 turns of wire, each forming a rectangular loop 50.0 cm by 30.0 cm. The coil is placed entirely in a magnetic field with magnitude B = 3.50 T and with B initially perpendicular to the coil’s plane. What is the maximum value of the emf produced when the coil is spun at 1000 rev/min about an axis perpendicular to B?