The unit for reluctance is

More Questions from Magnetism and Electromagnetism

• If a loop in a basic dc generator suddenly begins rotating at a faster speed, the induced voltage
• When the current through the coil of an electromagnet reverses, the
• What is the reluctance of a material that has a length of 0.07 m, a cross-sectional area of 0.014 m2, and a permeability of 4,500 µWb/At × m?
• When a solenoid is activated, the force that moves the plunger is
• There is 900 mA of current through a wire with 40 turns. What is the reluctance of the circuit if the flux is 400 µWb?
• The voltage induced across a certain coil is 200 mV. A 120 Ω resistor is connected to the coil terminals. The induced current is
• An electromagnetic field exists only when there is
• A coil of wire is placed in a changing magnetic field. If the number of turns in the coil is decreased, the voltage induced across the coil will
• A basic one-loop dc generator is rotated at 90 rev/s. How many times each second does the dc output voltage peak (reach maximum)?
• What is the flux density when the flux is 5.5 µWb and the cross-sectional area is 6 × 10–3 m2?

Discussion & Comments