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A flat coil of wire is used with an LC-tuned circuit as a receiving antenna. The...
24.45 - Energy in Electromagnetic Waves A 180-turn flat coil of wire 35.0 cm in diameter...
24.45 - Energy in Electromagnetic Waves A 180-turn flat coil of wire 35.0 cm in diameter acts as an antenna for FM radio at a frequency of 120 MHz. The magnetic field of the incoming electromagnetic wave is perpendicular to the coil and has a maximum strength of 1.01x1012 T. what power is incident on the coil? Submit Answer Tries o/10 What average emf is induced in the coil over one-fourth of a cycle? Submit Answer Tries 0/10 If the...
5- Creating Magnetism by running a current through a wire is called ______ whereas creating potential...
5- Creating Magnetism by running a current through a wire is called ______ whereas creating potential difference by changing the magnetic flux through a loop of a conductor is called ________ A- Magnetic induction, Electromagnetic induction. B- Lenz's law, Faraday's law C- Magnetic Induction, Lenz's law D-Faradays Law, Lenz's Law E- Electromagnetic induction, Faraday's law 6- The emf induced in a coil that is rotating in a magnetic field will be at a maximum when : a- The change in...
A flat coil of wire consisting of 20 turns, each with an area of 10 cm, is positioned perpendicularly to a uniform magnetic field that varies with time according to B=2.5 f
A flat coil of wire consisting of 20 turns, each with an area of 10 cm, is positioned perpendicularly to a uniform magnetic field that varies with time according to B=2.5 f. where t is measured in s and B in T. If the coil has a total resistance of 0.10 9, what is the magnitude of the induced current at 0.8s? a. 0.20 A b. 0.60 A c. 0.50 A d. 0.80 A e. None of the above At what frequency...
Chapter 22 - Electromagnetic Induction 4-A flat circular coil with N = 105 turns, a radius...
Chapter 22 - Electromagnetic Induction 4-A flat circular coil with N = 105 turns, a radius of r = 4 × 10-2 m, and a resistance of R 0.480 ? is exposed to an external magnetic field that is directed perpendicular to the plane of the coil. The magnitude of the external magnetic field is changing at a rate of AB = 0.783 T s, thereby inducing a current in the coil. Find the magnitude of the magnetic field at...
A circular loop of wire can be used as a radio antenna. If an 18.0 cm...
A circular loop of wire can be used as a radio antenna. If an
18.0 cm diameter antenna is located 2.50 km from a 95.0 MHz source
with a total power of 55.0 kW, what is the maximum emf induced in
the loop? Assume that the source radiates uniformly in all
directions.
у In vicinity of loop, wave propagates in +x-direction. E B Circular loop antenna E lies in xy-plane. В. In vicinity of loop, E has only a y-component...
For your backpacking excursions, you have purchased a radio capable of detecting a signal as weak...
For your backpacking excursions, you have purchased a radio capable of detecting a signal as weak as 1.00 x 10-14 w/m2. This radio has a 2300 turn coil antenna that has a radius of 2.00 cm wound on an iron core that increases the magnetic field by a factor of 200. The broadcast frequency of the radio station is 1500 KHz (a) What is the peak magnetic field strength of an electromagnetic wave of this minimum intensity? (b) What is...
A flat coil of wire consisting of 15 turns, each with an area of 50 cm2,...
A flat coil of wire consisting of 15 turns, each with an area of 50 cm2, is positioned perpendicularly to a uniform magnetic field that increases its magnitude at a constant rate from 3 T to 7 T in 2.0 s. What is the magnitude of the emf (in Volts) induced in the coil? Your answer should be a number with two decimal places, do not include the unit.
A generator almost always contains a coil of wire inside a magnetic field. The coil shown...
A generator almost always contains a coil of wire inside a magnetic field. The coil shown below has N turns and a radius of R. It is rotating in a magnetic field of strength B at an angular frequency o. This means that the angle between the area vector of the coil and the magnetic field is = wt. х a. What is the induced emf in the coil as a function of time? b. If the left side of...
answer both for good rating A square coil of wire of side 2.50 cm is placed...
answer both for good rating
A square coil of wire of side 2.50 cm is placed in a uniform magnetic field of magnitude 1.50 T directed into the page as in the figure shown below. The coil has 35.0 turns and a resistance of 0.780 2. 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 X X X X X X X X (a) the magnitude...
Question 1: The armature of a small generator consists of a flat, square coil with 180...
Question 1: The armature of a small generator consists of a flat, square coil with 180 turns and sides with a length of 1.70 cm. The coil rotates in a magnetic field of 7.55×10−2 T. What is the angular speed of the coil if the maximum emf produced is 2.10×10−2 V? Question2: At the instant when the current in an inductor is increasing at a rate of 6.40×10−2 A/s , the magnitude of the self-induced emf is 1.65×10−2 V ....
24.45 - Energy in Electromagnetic Waves A 180-turn flat coil of wire 35.0 cm in diameter acts as an antenna for FM radio at a frequency of 120 MHz. The magnetic field of the incoming electromagnetic wave is perpendicular to the coil and has a maximum strength of 1.01x1012 T. what power is incident on the coil? Submit Answer Tries o/10 What average emf is induced in the coil over one-fourth of a cycle? Submit Answer Tries 0/10 If the...
Chapter 22 - Electromagnetic Induction 4-A flat circular coil with N = 105 turns, a radius of r = 4 × 10-2 m, and a resistance of R 0.480 ? is exposed to an external magnetic field that is directed perpendicular to the plane of the coil. The magnitude of the external magnetic field is changing at a rate of AB = 0.783 T s, thereby inducing a current in the coil. Find the magnitude of the magnetic field at...
A circular loop of wire can be used as a radio antenna. If an
18.0 cm diameter antenna is located 2.50 km from a 95.0 MHz source
with a total power of 55.0 kW, what is the maximum emf induced in
the loop? Assume that the source radiates uniformly in all
directions.
у In vicinity of loop, wave propagates in +x-direction. E B Circular loop antenna E lies in xy-plane. В. In vicinity of loop, E has only a y-component...
For your backpacking excursions, you have purchased a radio capable of detecting a signal as weak as 1.00 x 10-14 w/m2. This radio has a 2300 turn coil antenna that has a radius of 2.00 cm wound on an iron core that increases the magnetic field by a factor of 200. The broadcast frequency of the radio station is 1500 KHz (a) What is the peak magnetic field strength of an electromagnetic wave of this minimum intensity? (b) What is...
A generator almost always contains a coil of wire inside a magnetic field. The coil shown below has N turns and a radius of R. It is rotating in a magnetic field of strength B at an angular frequency o. This means that the angle between the area vector of the coil and the magnetic field is = wt. х a. What is the induced emf in the coil as a function of time? b. If the left side of...
answer both for good rating
A square coil of wire of side 2.50 cm is placed in a uniform magnetic field of magnitude 1.50 T directed into the page as in the figure shown below. The coil has 35.0 turns and a resistance of 0.780 2. 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 X X X X X X X X (a) the magnitude...
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