A 5-turn square loop 10 cm along a side, resistance = 4.0 ohm is placed in a magnetic field that makes an angle of30° with the plane of the loop. The magnitude of this field varies with time according to B =0.50 f², where t is measured in s and B in T. What is the induced current in the coil at t = 4.0 s?
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- A circular coil of radius 5.0 cm and resistance 0.20 Ω is placed in a uniform magnetic field perpendicular to the plane of the coil. The magnitude of the field changes with time according to B =50e-0.2tT. What is the magnitude of the current induced in the coil at the time t = 2.0 s? Answer: 2.6 mAThe area of a 200 turn coil is 0.02 m². The resistance of the coil is 64 2. If the coil is oriented with its surface perpendicular to a magnetic field B, at what rate in T/s should the magnitude of B change to induce a current of 0.25 A in the coil? 320 T/s 800 T/s 4 T/s 2 T/s 0.5 T/sThe component of the external magnetic field along the central axis of a 50 turn coil of radius 40.0 cm decreases from 2.90 T to 0.550 T in 3.00 s. The resistance of the coil is 4.50 Ohms. What is the magnitude of the current induced in the coil?
- A 1450 turn coil of wire, 6.16 cm in diameter, is in a magnetic field that drops from 0.723 T to 0 T in 41.9 ms. The axis of the coil is parallel to the field. What is the emf (in V) of the coil?A conducting coil of 1900 turns is connected to a galvanometer, and the total resistance of the circuit is 30 2. The area of each turn is 4.00 x 10-4 m². This coil is moved from a region where the magnetic field is zero into a region where it is nonzero, the normal to the coil being kept parallel to the magnetic field. The amount of charge that is induced to flow around the circuit is measured to be 7.5 × 10-³ C. Find the magnitude of the magnetic field. Number i 0.29 Units TAn 44-turn coil has square loops measuring 0.353m along a side and a resistance of 4.1902. It is placed in a magnetic field that makes an angle of 48.9° with the plane of each loop. The mannitude of this field varies 3 with time according to B = 2.85t, where t is measured in seconds and B in teslas. What is the induced current in the coil at t = 1.79s ? An 11-tum coll has square loops measuring 0.353 m along a side and a resistance of 1.19 12. It is placed in a magnetic field that makes an angle of 18.9° with the plane of each loop. The magnitude of this field varies with time according to B-2.8513, where is measured in seconds and 8 in teslas. What is the induced current in the coil at -1.79 ?
- A circular loop is hanging on the wall. It has a radius of 33.3 cm and is comprised of ) 12 coils. There is a magnetic field perpendicular to the wall, coming out of the wall, that grows from 1.5 T to 7.5 T in 3.0 seconds. The coil has a resistance of 3.752, what is the magnitude and direction of the induced current in the coil?A single loop of copper wire, lying flat in a plane, has an area of 7.20 cm2 and a resistance of 1.80 N. A uniform magnetic field points perpendicular to the plane of the loop. The field initially has a magnitude of 0.500 T, and the magnitude increases linearly to 1.50 T in a time of 1.12 s. What is the induced current (in mA) in the loop of wire over this time? 3.57 You may have neglected to convert units. Be sure to convert the area from cm2 to m2. Then, convert the current from A to mA. mA Need Help? Read ItA square conducting hoop with side length 1.41 m is placed in a uniform magnetic field that points out the page. The loop lies perpendicular to the field. If the resistance of the loop is 4 w what is the magnitude and direction of the induced current as the magnetic field increases steadily from 2.0 T to 4.0 T in 10.0 seconds