Revision test 3.11 to 3.14

What is required to induce a current in a conductor cutting magnetic field lines?

• A connected external load
• A magnetic shield
• A higher current flow

How does the number of turns in a coil affect inductance?

• Inductance is inversely proportional to the turns
• Inductance is proportional to the number of turns
• Inductance remains unchanged with turns

Which factor directly influences the strength of the induced voltage in a conductor?

• The current in the conductor
• The magnetic field strength
• The frequency of the current

What is mutual induction dependent on in two adjacent circuits?

• The voltage difference between the circuits
• The rate of change of the magnetic field
• The material of the core

How does the length of a coil affect its inductance?

• Inductance increases with increasing coil length
• Inductance decreases with increasing coil length
• Inductance is unaffected by coil length

Which factor determines the energy storage capacity of an inductor?

• The number of windings
• The core material
• The wire thickness

What happens to the total inductance when inductors are connected in series?

• The total inductance is less than the smallest inductor
• The total inductance is the sum of the individual inductances
• The total inductance is equal to the largest inductor

What is inductive reactance measured in?

• Ohms
• Henrys
• Farads

How does increasing the frequency of an AC circuit affect inductive reactance?

• It decreases the inductive reactance
• It increases the inductive reactance
• It has no effect

In which application are inductors used to choke the flow of AC current?

• Transformers
• Filters
• Chokes