3. An electric generator consists of a rectangular coil of wire rotating about its longitudinal axis which is perpendicular to a magnetic field, the strength of which, |B|, can be adjusted. The coil has 158 turns of wire and measures 18.00 cm by 26.00 cm. The ends of the wire are connected to an external circuit. a) If it is desired that the generator provides an emf with an rms value of 230v oscillating at 50 Hz, what should be the strength of the magnetic field? b) If the external circuit connected to this generator consists of a 0.2 H inductor, a 36 µF capacitor and a 220 N resistor connected in series, what is the impedance of this circuit? c) What is the peak current through the resistor?

3. An electric generator consists of a rectangular coil of wire rotating about its longitudinal axis which is perpendicular to a magnetic field, the strength of which, |B|, can be adjusted. The coil has 158 turns of wire and measures 18.00 cm by 26.00 cm. The ends of the wire are connected to an external circuit. a) If it is desired that the generator provides an emf with an rms value of 230v oscillating at 50 Hz, what should be the strength of the magnetic field? b) If the external circuit connected to this generator consists of a 0.2 H inductor, a 36 µF capacitor and a 220 N resistor connected in series, what is the impedance of this circuit? c) What is the peak current through the resistor?

Similar questions

The 5-cm by 8-cm rectangular coil of a bicycle generator is rotating at a rate of 125 rpm in a 255-mT magnetic field. The output voltage of the generator is used to power a bicycle headlight that has a total resistance of 360 N. (a) How many turns are there in the coil if the peak output voltage is 1.8 V? N = turns (b) What is the rms-average current through the headlight? Irms mA
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4. A square circuit has 2 m sides and is perpendicular to a uniform magnetic field, with half the area of the loop in the field, as shown. The loop contains a 9 V voltage source. The magnitude of the magnetic field varies with time, with B = 6 + 5t, where B is the field strength in teslas and t is the time in seconds. (a) Determine the value of the induced emf in the circuit. (b) Which way does the overall current flow in the circuit, clockwise or counter-clockwise? Or is the current zero? Explain why your answer is correct.
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Two coils are placed close together in a physics lab to demonstrate Faraday's law of induction. A current of 8.00 A in one is switched off in 2.00 ms, inducing a 3.00 V emf in the other. What is their mutual inductance (in mH)? mH Additional Materials Reading
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