5. A rectangular coil of sides 7.00 cm and 16.0 cm contains 120 loops and its plane is positioned perpendicular to a uniform 0.58-T magnetic field, as shown. It is quickly and uniformly pulled from the field to a region where the B-field drops abruptly to zero. It takes 0.18 s for the whole coil to reach the field-free region. How much power is dissipated in the coil if its resistance is 150 ? W XXXXXXXXX
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- 2. An AC generator has 75 rectangular loops on its armature. Each loop is 14.0 cm long and 10.0 cm wide. The armature rotates at 1300 rpm about an axis parallel to the long side. If the loop rotates in a uniform magnetic field of 0.700 T, which is perpendicular to the axis of rotation, what will be the maximum output voltage of this generator? VoltsA generator has a 460-turn coil that is 10 cm long and 12 cm wide. The coil rotates at 9.0 rotations per second in a 0.10-T magnitude B→ field. A)Determine the generator's peak voltage.1. A 500-turn circular coil with an area of 1.54 x 102 m² is perpendicular to a 0.060 T field. The magnetic field changes to 0.020 T in the opposite direction in 0.12 s. B₁ = 0.060 T Initial What is the average emf induced in the coil? ↓ ↓ B = 0.020 T Final
- 1. A generator is shown below. If the period of rotation of the spinning loop of wire is T, what is the fraction of a period between maximum magnetic flux and minimum induced emf? Magnetic Poles Magnetic Flux N Wire Loop (the conductor) Slip-rings. Carbon Brushes Axis of Rotation14. A wire is oriented into a loop that has a diameter of 1 cm. This loop is then pulled closed in 0.5 s. If there was a magnetic field directed through the loop of 0.25 T, what emf is induced?10. A generator uses a coil that has 100 turns and a 0.450-T magnetic field. The frequency of this generator is 60.0 Hz, and its emf has an rms value of 110 V (Vrms Assuming that each turn of the coil is circular, determine the length of the wire from which the coil is made. m
- An instrument requires 2.500 A current to operate. The primary coil of a transformer draws a 5.000 A current. The secondary coil of the transformer nec turns. Find the number of turns in the primary coil. If Nsec=5500turns4. Consider a square-shaped conducting coil with 75 turns of wire. Each turn of the wire has a length of the side equal to 12 cm. A uniform magnetic field is directed perpendicular to the plane of the coil. If the magnetic field changes linearly from 0 to 0.35-T in 0.40 s, what is the magnitude of the induced EMF inside the coil while the magnetic field is changing?Two coils are placed close together in a physics lab to demonstrate Faraday's law of induction. A current of 8.00 A in one is switched off in 2.00 ms, inducing a 3.00 V emf in the other. What is their mutual inductance (in mH)? mH Additional Materials Reading
- 4. possible emf when the loop is placed in a time-varying magnetic field. You investigate the three loop geometries in Figure A: a long, thin rectangle; a square; and a circle. Which one will give the largest emf? 1 mm O Figure A1. A simple AC generator consists of 10 turns of coils with an area of 1000 cm2. It rotates at a constant frequency of 60 Hz in a region where the magnetic field in 0.40 T. What is the peak electromotive force of the generator?5. An emf is induced by rotating a 980–turn, 23.0 cm diameter coil in the Earth’s 5.30×10-5 T magnetic field. What average emf is induced, given the plane of the coil is originally perpendicular to the Earth’s field and is rotated to be parallel to the field in 10.0 ms? THIS IS NOT AND WILL NOT BE GRADED