Understanding Inductance and Inductors

What is the primary function of an inductor in a circuit?

• To increase the current

• To store electrical energy

• To resist changes in current

• To convert AC to DC

What happens when the current through an inductor changes?

• The inductor increases its resistance

• A self-induced voltage is generated

• The inductor stores more energy

• The magnetic field collapses

In the simulation, what is observed when the switch is closed in a circuit with an inductor?

• The current gradually increases to its maximum

• The voltage across the inductor becomes zero

• The current immediately reaches its maximum

• The current decreases to zero

According to Faraday's Law, what does the induced voltage depend on?

• The length of the wire

• The temperature of the environment

• The resistance of the wire

• The number of windings and the rate of change of magnetic flux

How is inductance typically measured?

• In Ohms

• In Farads

• In Henrys

• In Volts

What is the unit of inductance?

• Farad

• Ohm

• Henry

• Volt

Which of the following is a passive circuit element?

• LED

• Diode

• Inductor

• Transistor

What is the relationship between inductance and the number of windings in a coil?

• Inductance is independent of the number of windings

• Inductance is proportional to the square of the number of windings

• Inductance is inversely proportional to the number of windings

• Inductance is directly proportional to the number of windings

What does a one Henry inductor produce when the current changes by one amp per second?

• One joule of energy

• One watt of power

• One amp of current

• One volt of self-induced voltage

In the examples, what is the typical result of increasing the current through an inductor?

• The self-induced voltage becomes positive

• The inductance decreases

• The self-induced voltage becomes negative

• The inductance increases