A microwave beam with a wavelength of 1.5 cm has an intensity of 30 W/m2. What is the magnetic field amplitude? (

A series RLC circuit attached to a 120 V/60 Hz power line draws 3.00 A of current with a power factor of 0.890. What is the value of the resistor?

Assume that a 7.0 cm diameter, 100 W light bulb radiates all its energy as a single wavelength of visible light. (

A 22.0 nF capacitor is connected across an AC generator that produces a peak voltage of 4.30 V. At what frequency  is the peak current 42.0 mA?

a) What current is needed to generate the magnetic field strength of 1.0 T at a point 1.1 cm from a long, straight wire? (

Power: A series circuit consists of a 50-Hz ac source, a 40-Ω resistor, a 0.30-H inductor, and a 60-μF capacitor. The rms current in the circuit is measured to be 1.6 A. What is the power factor of the circuit?

A 9.0 mH inductor is connected in parallel with a variable capacitor. The capacitor can be varied from 100 pF to 340 pF. a) What is the minimum oscillation frequency for this circuit? (2 points) b) What is the maximum oscillation frequency for this circuit?  (2 points)

A 10 cm x 10 cm square is bent at a 90 angle. A uniform 5.8×10−2 T magnetic field points downward at a 45

Kirchhoff’s rules: A multiloop circuit is shown in the figure. It is not necessary to solve the entire circuit. Compared to the polarity shown in the figure, the emf ε1 is closest to

Field intensity: An 800-kHz radio signal is detected at a point 4.5 km distant from a transmitter tower. The electric field amplitude of the signal at that point is 0.63 V/m. Assume that the signal power is radiated uniformly in all directions and that radio waves incident upon the ground are completely absorbed. What is the magnetic field amplitude of the signal at that point? (c = 3.0 × 108 m/s, μ0 = 4π × 10-7 T ∙ m/A, ε0 = 8.85 × 10-12 C2/N ∙ m2)