A 20-turn coil with radius 4 cm lies in the x-y plane. The coil
has a total resistance of 5 Ω.
The coil is in the presence of a uniform 0.25 T magnetic field
oriented 15° with respect to the
positive z-axis. Give the direction (clockwise or
counter-clockwise) and magnitude of the
current that will be induced in the coil by the field. Additionally
what happens to the value of the induced current if the magnetic
field changes to a function of time for t = 0 to 10 s given by B =
(.25 - 0.025t)T while everything else stays the same.
A 20-turn coil with radius 4 cm lies in the x-y plane. The coil has a...
1) A 179‑turn circular coil of radius 3.55 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 13.7 Ω resistor to create a closed circuit. During a time interval of 0.121 s, the magnetic field strength decreases uniformly from 0.643 T to zero. Find the energy, in millijoules, that is dissipated in the resistor during this time interval. energy: mJ 2) You decide...
Q1. A magnetic field points perpendicularly into a 2.0 cm x 4.0 cm rectangular coil with 120 turns and 0.25 Ω total resistance. At a certain instant, the magnetic field strength is 0.22 T and it is increasing at a rate of 2.5 T/s a) The induced current in the coil is a. clockwise. b. counter clockwise. b) Calculate the instantaneous induced current in the coil.
A circular coil of radius 0.11 m contains a single turn and is located in a constant magnetic field of magnitude 0.25 T. The magnetic field has the same direction as the normal to the plane of the coil. The radius increases to 0.31 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 0.71 Ω. Find the magnitude of the induced current.
A 114-turn square coil of side 20.0 cm rotates about a vertical axis at ω = 1.20 103 rev/min as indicated in the figure below. The horizontal component of Earth's magnetic field at the coil's location is equal to 2.00 10-5 T. (a) Calculate the maximum emf induced in the coil by this field. 1.824 mV (wrong) (b) What is the orientation of the coil with respect to the magnetic field when the maximum emf occurs? The plane of the...
The component of the external magnetic field along the central axis of a 125-turn circular coil of radius 26.0 cm decrsases from 2.40 T to 0.650 T in 3.50 s. If the resistance of the col is 9.000,what is the magnitude of the induced current in the coil? Number What is the direction of the current if the axial component of the field points away from the viewer? clockwise O counter-clockwise
The component of the external magnetic field along the...
1. A 85 turn elastic circular coil of wire initially has a radius of 74.2 cm and is immersed in a uniform magnetic field with a strength of 0.495 T. At t 0, the coil is released and begins decreasing in radius at a constant rate of 7.22 cm/s. While it contracts, the number of turns does not change. a) Write the magnetic flux through a single turn of the coil as a function of time. (Hint: What causes the...
A single-turn rectangular coil, whose length is 5 cm and width is 2 cm, has a resistance of 2 Ω. The magnetic field at all points inside the coil, in a direction parallel to the plane of the rectangular coil, varies according to B = Boe-a1, where Bo = 0.25 T and a = 200 Hz. What is the current induced in the coil at t = 0.001 s?
A 117-turn square coil of side 20.0 cm rotates about a vertical
axis at ω = 1350 rev/min as indicated in the figure below.
The horizontal component of the Earth's magnetic field at the
coil's location is equal to 2.00 ✕ 10−5 T.(a) Calculate the maximum emf induced in the coil by this field. (b) What is the orientation of the coil with respect to the magnetic field when the maximum emf occurs? The plane of the coil is perpendicular to the...
Suppose a 46-turn coil lies in the plane of the page in a uniform magnetic field that is directed into the page. The coil originally has an area of 0.24 m2. It is stretched to have no area in 0.100 s. What is the magnitude of the induced emf (in Volts) if the uniform magnetic field has a strength of 1.50 T? You should round your answer to the nearest integer, do not include the unit.
Suppose a 54-turn coil lies in the plane of the page in a uniform magnetic field that is directed into the page. The coil originally has an area of 0.22 m2. It is stretched to have no area in 0.100 s. What is the magnitude of the induced emf (in Volts) if the uniform magnetic field has a strength of 1.50 T? You should round your answer to the nearest integer, do not include the unit.