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Determine the impedance of the circuit

Suppose you take a 2.0×10^{2} resistor and a 0.40 inductor and make a series circuit with a voltage source that has voltage amplitude 30 and an angular frequency of 2.5×10^{2} .

Part A: What is the impedance of the circuit?

Express your answer in ohms to three significant figures.

Part B: What is the current amplitude?

Express your answer in amperes to three significant figures.

Part C: What are the voltage amplitudes across the resistor and across the inductor?

Express your answers in volts to two significant figures separated by a comma.

Part D: What is the phase angle of the source voltage with respect to the current?

Express your answer in degrees to two significant figures.

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## Q : Magnitude of the electric field along the wire

A copper wire of cross-sectional area3.20 × 10-6 m2 and length 3.60 m has a current of 2.40 A uniformly distributed across that area. (a) What is the magnitude of the electric field (in N/C or V/m) along the wire?