1. The armature of an ac generator is a circular coil with 292 turns and radius 4.6 cm. When the armature rotates at 939 rpm, the amplitude of the emf in the coil is 21.3 V. What is the strength of the magnetic field (assumed to be uniform)?
2. The armature of an ac generator is a rectangular coil 27.0 cm by 17.9 cm with 294 turns. It is immersed in a uniform magnetic field of magnitude 3.0 T. If the amplitude of the emf in the coil is 32.7 V, at what angular speed is the armature rotating? Round your answer to two significant figures.
a.) ϕ = BAsin 30
= 0.22*(0.55^2)sin(30)
= .003327 Wb
b.) ϕ = BAsin 60
= 0.22*(0.55^2)sin(60)
=0.05763 Wb
c.) -ve z direction
1. The armature of an ac generator is a circular coil with 292 turns and radius...
The armature of an ac generator is a circular coil with 50 turns and radius 3.20 cm. When the armature rotates at 350.0 rev/min, the amplitude of the emf in the coil is 33.0 V. What is the magnitude of the magnetic field (assumed to be uniform)?
The armature of an ac generator is a rectangular coil 2.00 cm by 6.00 cm with 80 turns. It is immersed in a uniform magnetic field of magnitude 0.250 T. If the amplitude of the emf in the coil is 22.0 V, at what angular speed is the armature rotating?
1) The armature of an ac generator is a rectangular coil 2.00 cm by 6.00 cm with 80 turns. It is immersed in a uniform magnetic field of magnitude 0.250 T. If the amplitude of the emf in the coil is 22.0 V, at what angular speed is the armature rotating? _______rad/s 2) The magnetic field between the poles of an electromagnet is 3.30 T. A coil of wire is placed in this region so that the field is parallel...
An AC generator with armature loop area of 0.1 m2 and 20 turns, rotates the armature at 60 Hz within a static magnetic field with magnetic flux density of 0.2 T. A) Using V_emf^m=NAωB_0 sinωt, include below the appropriate numeric expression for V_emf^m as a function of time including units. (Hint: The peak emf voltage should be between 140 and 160 V.) B) Using MATLAB, plot the V_emf^m expression derived for part (a.) for time t ranging from 0 to...
a. A coil of wire with 209 circular turns of radius 3.10 cm is in a uniform magnetic field along the axis of the coil. The coil has R = 41.5 Ω . At what rate, in teslas per second, must the magnetic field be changing to induce a current of 0.149 A in the coil? b. A closely wound rectangular coil of 90.0 turns has dimensions of 30.0 cm by 47.0 cm . The plane of the coil is...
An electric generator contains a coil of 110 turns of wire, each forming a rectangular loop 46.4 cm by 32.8 cm. The coil is placed entirely in a uniform magnetic field with magnitude B = 4.49 T and initially perpendicular to the coil's plane. What is in volts the maximum value of the emf produced when the loop is spun at 863 rev/min about an axis perpendicular to the magnetic field?
The armature of a small generator consists of a flat, square coil with 200 turns and sides with a length of 1.70 cm. The coil rotates in a magnetic field of 8.55x10-2T. You may want to review (Page) For related problemsolving tips and strategies, you may want to view a Video Tutor Solution of Emf and current induced in a loop. Part A What is the angular speed of the coil if the maximum emf produced is 2.90x10-2 V? Express...
The armature of a small generator consists of a flat, square coil with 160 turns and sides with a length of 1.55 cm. The coil rotates in a magnetic field of 8.05×10−2 T What is the angular speed of the coil if the maximum emf produced is 2.60×10−2 V?
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 ....
The armature of a small generator consists of a flat, square coil with 160 turns and sides with a length of 1.55 cm . The coil rotates in a magnetic field of 7.60×10−2 T . What is the angular speed of the coil if the maximum emf produced is 2.10×10−2 V ? (in rad/s)