4. A square coil of silver wire of side length 20 cm with 500 turns is in a uniform magnetic field whose magnitude is increasing at a rate of 0.25 T/s, as shown in the figure below. X X X X X X X X X X X X Is there an induced current in this coil? If so, in which direction does the current flow? Explain your answers. (b) What is the EMF induced in the coil?
4. A square coil of silver wire of side length 20 cm with 500 turns is in a uniform magnetic field whose magnitude is increasing at a rate of 0.25 T/s, as shown in the figure below. X X X X X X X X X X X X Is there an induced current in this coil? If so, in which direction does the current flow? Explain your answers. (b) What is the EMF induced in the coil?
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c. What is the resistance of the coil given that the diameter of the wire is 2.00 mm? (Recall, resistance of wire is given by R = ρL/A, where ρ is the resistivity of the metal, L is the length of the wire, and A is the cross-sectional area.)
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