Self Inductance Practice Problems

A solenoid is marked 650 turns. The mean flux per turn is found to be 6.80 × 10^-4 Wb when a current of 3.20 A flows through the solenoid. If a self-induced emf of 0.0800 V is desired, determine the magnitude of the current change rate (di/dt) through the solenoid.

Tests on an inductor show that a self-induced emf of magnitude 0.185 V is generated when the current is increased at a rate of 0.580 A/s. The manufacturer's label shows that the inductor has 550 turns. Determine the mean magnetic flux in each turn when the inductor draws a current of 0.770 A.

The electrical current in a circuit is increased at a constant rate of 0.520 A/s. The self-induced emf of an inductor in the circuit is measured to be 0.230 V. Find the inductor's inductance.

A toroid is marked 48.5 mH. Its diameter is 15.0 cm, and its cross-sectional area is 1.8 cm². Determine its number of turns.

The metallic spiral binding (coil bind) of a book has 48 turns and is 297 mm long. Its diameter is 25 mm. If the binding acts like an ideal solenoid, determine its self-inductance if it is connected in a circuit.

While developing a prototype for an electromagnetic launcher, Taylor uses an air-core solenoid that is 1.2 meters long, has a diameter of 3.5 centimeters, and has 9,000 turns of copper wire wrapped around it. Determine the inductance 𝐿 of the solenoid.

In an electrical circuit, a component has a resistance of 2.5-Ω and an inductance of 500 mH. It is connected to an AC source. At a particular instant, the current in the circuit is 4.00 A and is increasing at a rate of 1.00 A/s. Calculate the total voltage across this component at that instant.