The area of a 140 turn coil oriented with its plane perpendicular to a 0.17 T magnetic field is 6.9×10−2 m2 .
Find the average induced emf in this coil if the magnetic field reverses its direction in 0.38 s .
The area of a 140 turn coil oriented with its plane perpendicular to a 0.17 T...
The area of a 120-turn coil oriented with it's plane perpendicular to a 0.20-T magnetic field is 0.050 m2. Find the average induced emf in this coil if the magnetic field reverses its direction in 0.34s.
A 6.80 cm diameter wire coil is initially oriented so that its plane is perpendicular to a magnetic field of 0.780 T pointing up. During the course of 0.160 s, the field is changed to one of 0.280 T pointing down. What is the average induced emf in the coil?
A 8.30 cm diameter wire coil is initially oriented so that its plane is perpendicular to a magnetic field of 0.680 T pointing up. During the course of 0.180 s, the field is changed to one of 0.250 T pointing down. What is the average induced emf in the coil?
A circular wire coil (10.3 cm in diameter) is initially oriented so that its plane is perpendicular to a magnetic field of 0.6 T pointing up. During the course of 0.48 s, the field is changed to one of 0.2T pointing down. What is the average induced emf in the coil? Take the initial direction of the magnetic field as being the positive direction. Answer: Check
A 400-turn circular coil (radius = 1.0cm) is oriented with its plane perpendicular to a uniform magneticfield which has a magnitude thatvaries sinusoidally with afrequency of 90 Hz. If the maximum value of the induced emf in thecoil is observed to be 4.2 V, what is the maximum value of themagnitudeof the varying magnetic field? 1. 31 mT 2. 65mT 3. 62mT 4. 68mT 5. 59mT
A magnetic field is perpendicular to the plane of a single-turn circular coil. The magnitude of the field is changing, so that an emf of 0.61 V and a current of 3.2 A are induced in the coil. The wire is the re-formed into a single-turn square coil, which is used in the same magnetic field (again perpendicular to the plane of the coil and with a magnitude changing at the same rate). What emf and current are induced in...
t A 20.0-cm-diameter loop of wire is initially oriented so that its plane is perpendicular to a 1.2-T magnetic field. The loop is rotated so that its plane is parallel to the field direction in 0.15 s. What is the average induced emf in the loop? (5pts.) 1.
A magnetic field is perpendicular to the plane of a single-turn circular coil. The magnitude of the field is changing, so that an emf of 0.26 V and a current of 4.9 A are induced in the coil. The wire is then re-formed into a single-turn square coil, which is used in the same magnetic field (again perpendicular to the plane of the coil and with a magnitude changing at the same rate). What (a) emf and (b) current are...
A coil consists of five loops of wire, each with an area of 0.20 m2. The coil is oriented with its plane perpendicular to a magnetic field that increases uniformly from 1 x 10-2 T to 2.5 x 10-2 T in a time of 5 x 10-3 s. (a) What is the induced emf in the coil? (b) If the total resistance of the coil is 5 Ω, what the current induced in the coil?
An 16 cm diamter loop of wire is initially oriented perpendicular to a magnetic field 1.8 T magnetic field. The loop is rotated so that its plane is parralel to the field direction in 0.14 s. What is the average induced emf in the coil?