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A circular coil of 30 turns and radius 3.1 cm lies at… | StemPy Lab
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A circular coil of 30 turns and radius 3.1 cm lies at right angles to a field that grows steadily at 0.52 T each second. The coil is closed and has a resistance of 4.6 Ω. What is the induced current?
Physics
Hard
High School (11–12)
Electricity & Magnetism › Electromagnetic Induction
Board Exam
AP
A-Level
IB
Created by
StemPy Lab
A circular coil of
30
30
30
turns and radius
3.1
3.1
3.1
cm lies at right angles to a field that grows steadily at
0.52
0.52
0.52
T each second. The coil is closed and has a resistance of
4.6
Ω
4.6\ \Omega
4.6
Ω
. What is the induced current?
0.341
mA
0.341\ \text{mA}
0.341
mA
2.56
mA
2.56\ \text{mA}
2.56
mA
10.2
mA
10.2\ \text{mA}
10.2
mA
41.0
mA
41.0\ \text{mA}
41.0
mA
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← A wheel of a bicycle has metal spokes, each 0.42 m long, and the wheel turns 3.0 times each second. A spoke moves in a vertical field of 4.4 × 10⁻⁵ T that is at right angles to the plane of the wheel. What is the emf between its ends?
Coil A is wound of copper wire. Coil B has the same size and the same number of turns, but it is wound of a wire of much higher resistance. The same magnet is pushed into each at the same speed. Compare what happens. →
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Electricity & Magnetism › Electromagnetic Induction
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