1. Which of these will produce an induced magnetic field? A steady current, A co
ID: 1277853 • Letter: 1
Question
1. Which of these will produce an induced magnetic field? A steady current, A constant magnetic field, A changing current, A stationary charge, A moving charge
2. Compute the magnetic flux of a square loop, 2cm on a side, with a magnetic field of 0.400 T. The loop makes a 45 degree angle with the magnetic field. [Use units of Webers (Wb) for the flux]
3. If the magnetic field through a loop of N=1000 is perpendicular to the loop, with an area of 5cm2, and increases from B=0 to B=5T in a time of 2sec, what is the induced emf in the loop?
Explanation / Answer
1.A changing current and A moving charge
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2. magnetic flux = BA cos theta
flux = 0.4 * 0.02*0.02 * cos 45
flux = 1.1313 Wb
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3. induced emf e = NAdB/dt
e = 1000 * 5e-4 * (5-0)/2
e = 1.25 Volts
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