Question

In: Physics

3. ​ ​Induced Emf ​A circular coil of radius 0.11 m contains a single turn and...

3. ​ ​Induced Emf
​A circular coil of radius 0.11 m contains a single turn and is located in a constant magnetic field

of magnitude 0.27 T. The magnetic field has the same direction as the normal to the plane of the coil. The radius increases to 0.30 m in a time of 0.080 s.

(a) Determine the magnitude of the emf induced in the coil.
(b) The coil has a resistance of 0.70 ?. Find the magnitude of the induced current.

Solutions

Expert Solution

genius_generous answered 2 years ago
Next > < Previous

Related Solutions

A four-turn circular wire coil of radius 0.550 m lies in a plane perpendicular to a...
A four-turn circular wire coil of radius 0.550 m lies in a plane perpendicular to a uniform magnetic field of magnitude 0.355 T. If the wire is reshaped from a four-turn circle to a two-turn circle in 0.128 s (while remaining in the same plane), what is the average induced emf in the wire during this time?
A magnetic field is perpendicular to the plane of a single-turn circular coil. The magnitude of...
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 0.25 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...
A magnetic field is perpendicular to the plane of a single-turn circular coil. The magnitude of...
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 0.81 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...
A 123 turn circular coil of radius 2.27 cm is immersed in a uniform magnetic field...
A 123 turn circular coil of radius 2.27 cm is immersed in a uniform magnetic field that is perpendicular to the plane of the coil. Over an interval of 0.167 s , the magnetic field strength increases from 54.5 mT to 94.1 mT . Find the magnitude of the average emf avg induced in the coil during this time interval, in millivolts.
A 105‑turn circular coil of radius 2.41 cm and negligible resistance is immersed in a uniform...
A 105‑turn circular coil of radius 2.41 cm and negligible resistance is immersed in a uniform magnetic field that is perpendicular to the plane of the coil. The coil is connected to a 14.7 Ω resistor to create a closed circuit. During a time interval of 0.167 s, the magnetic field strength decreases uniformly from 0.481 T to zero. Find the energy, in millijoules, that is dissipated in the resistor during this time interval.
A 26-turn circular coil has a diameter of 0.60 m. It is placed with its axis...
A 26-turn circular coil has a diameter of 0.60 m. It is placed with its axis along the direction of a 50.0-?T magnetic field and then flipped through an angle of 180° in 0.170 s. Determine the average emf generated in the coil, and the magnitude of the emf at 0.085 s. [4.3 x 10-3 V, 6.8 x 10-3 V] (Note: Very few students got the second part correct, you need to find the function for emf with respect to...
A 20-turn circular coil of radius 4.20 cm and resistance 1.00 Ω is placed in a magnetic field directed perpendicular to the plane of the coil.
A 20-turn circular coil of radius 4.20 cm and resistance 1.00 Ω is placed in a magnetic field directed perpendicular to the plane of the coil. The magnitude of the magnetic field varies in time according to the expression B = 0.010 0t + 0.040 0t2, where B is in teslas and t is in seconds. Calculate the induced emf in the coil att = 5.40 s.
A circular coil (radius = 0.40 m) has 160 turns and is in a uniform magnetic...
A circular coil (radius = 0.40 m) has 160 turns and is in a uniform magnetic field. If the orientation of the coil is varied through all possible positions, the maximum torque on the coil by magnetic forces is 0.16 Nm when the current in the coil is 4.0 mA. What is the magnitude of the magnetic field? 0.50 T 1.6 T 0.21 T 1.2 T 0.37 T
A circular coil of N turns has radius R, and carries a currenrt I in the counterclockwise direction in each turn.
A circular coil of N turns has radius R, and carries a currenrt I in the counterclockwise direction in each turn. The coil lies in the wy-plane,with its center at the origin. There is a uniform magnetic field B=Bxi + BzK everywhere. Assume both Bx>0 and Bz>0.(a) What is the net force on the coil? Remember that the magnetic field is uniform.(b) Find the magnetic dipole moment μ of the coil.(c) Find the torque vector on the coil.
A circular coil (830 turns, radius = 0.087 m) is rotating in a uniform magnetic field....
A circular coil (830 turns, radius = 0.087 m) is rotating in a uniform magnetic field. At t = 0 s, the normal to the coil is perpendicular to the magnetic field. At t = 0.021 s, the normal makes an angle of 45o with the field because the coil has made one-eighth of a revolution. An average emf of magnitude 0.075 V is induced in the coil. Find the magnitude of the magnetic field at the location of the...
ADVERTISEMENT
Subjects
ADVERTISEMENT
Latest Questions
ADVERTISEMENT