1. A circular coil consists of 500 turns of wire. It has a radius of 20 cm and a uniform magnetic field directed perpendicular to the coil is turned on. If the magnetic field changes linearly from 0 T to 15 T in 2.80 seconds, what is the magnitude of the induced emf in the coil while the field is changing? 2. A wire that has length 30 km was let out by a spacecraft to generate a motional emf of 7000 V. The magnitude of the earth's magnetic field at the location of the wire was 5.6 x 10 T. What is the orbital speed of the spacecraft?
1. A circular coil consists of 500 turns of wire. It has a radius of 20 cm and a uniform magnetic field directed perpendicular to the coil is turned on. If the magnetic field changes linearly from 0 T to 15 T in 2.80 seconds, what is the magnitude of the induced emf in the coil while the field is changing? 2. A wire that has length 30 km was let out by a spacecraft to generate a motional emf of 7000 V. The magnitude of the earth's magnetic field at the location of the wire was 5.6 x 10 T. What is the orbital speed of the spacecraft?
Chapter11: Magnetic Forces And Fields
Section: Chapter Questions
Problem 28P: An electron in a TV CRT moves with a speed of 6.0107 m/s, in a direction perpendicular to Earth's...
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![FARADAY'S LAW WORKSHEET PHYSICS CM LEC
1. A circular coil consists of 500 turns of wire. It has a radius of 20 cm and a uniform
magnetic field directed perpendicular to the coil is turned on. If the magnetic field
changes linearly from 0 T to 15 T in 2.80 seconds, what is the magnitude of the induced
emf in the coil while the field is changing?
2. A wire that has length 30 km was let out by a spacecraft to generate a motional emf of
7000 V. The magnitude of the earth's magnetic field at the location of the wire was
5.6 x 10 T. What is the orbital speed of the spacecraft?
3. A circular loop has a diameter of 25 cm. A uniform magnetic field is normal to the loop
and at one instant of time, it is changing at 0.7 T/s. What is the emf induced in the
antenna?
4. A square coil with 30 turns of wire has a cross section 2.80 cm on each side. Each turn
has the same area and the total resistance of the coil is 0.170 ohms. A uniform magnetic
field perpendicular to the plane of the coil is applied. If the field changes uniformly from
0.5 T to 1.5 T in 3.1 seconds, what is the induced emf in the coil while the field is
changing?
5. An electromagnet produces a 10 mT magnetic field. If the magnetic field magnitude
varies, it changes the flux through a circular loop of wire that has 27 turns. Suppose that
the loop has a diameter of 5 cm and the induced emf has a magnitude of 20 V. Find the
time required for the magnetic field to decrease to zero from its maximum value.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F257ed6af-253d-4c3e-a6e5-61e3e36b4d9e%2F101b7377-2ad6-4949-aaff-fbc04cd8a0bc%2Fvgw5ie_processed.jpeg&w=3840&q=75)
Transcribed Image Text:FARADAY'S LAW WORKSHEET PHYSICS CM LEC
1. A circular coil consists of 500 turns of wire. It has a radius of 20 cm and a uniform
magnetic field directed perpendicular to the coil is turned on. If the magnetic field
changes linearly from 0 T to 15 T in 2.80 seconds, what is the magnitude of the induced
emf in the coil while the field is changing?
2. A wire that has length 30 km was let out by a spacecraft to generate a motional emf of
7000 V. The magnitude of the earth's magnetic field at the location of the wire was
5.6 x 10 T. What is the orbital speed of the spacecraft?
3. A circular loop has a diameter of 25 cm. A uniform magnetic field is normal to the loop
and at one instant of time, it is changing at 0.7 T/s. What is the emf induced in the
antenna?
4. A square coil with 30 turns of wire has a cross section 2.80 cm on each side. Each turn
has the same area and the total resistance of the coil is 0.170 ohms. A uniform magnetic
field perpendicular to the plane of the coil is applied. If the field changes uniformly from
0.5 T to 1.5 T in 3.1 seconds, what is the induced emf in the coil while the field is
changing?
5. An electromagnet produces a 10 mT magnetic field. If the magnetic field magnitude
varies, it changes the flux through a circular loop of wire that has 27 turns. Suppose that
the loop has a diameter of 5 cm and the induced emf has a magnitude of 20 V. Find the
time required for the magnetic field to decrease to zero from its maximum value.
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