Analogue signal processing (AQA A-Level Physics): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
What is the main function of an LC resonance filter in electrical circuits?
What is the main function of an LC resonance filter in electrical circuits?
Select specific frequencies from AC input
How are the inductor and capacitor arranged in an LC resonance filter?
How are the inductor and capacitor arranged in an LC resonance filter?
In parallel
According to Lenz's Law, what opposes the change causing induced current?
According to Lenz's Law, what opposes the change causing induced current?
The direction of induced current itself
When a capacitor is charged, what type of energy is stored across its plates?
When a capacitor is charged, what type of energy is stored across its plates?
Electrostatic potential energy
In the mass-spring analogy for an LC circuit, what does inductance represent?
In the mass-spring analogy for an LC circuit, what does inductance represent?
Mass
What is the formula for the natural frequency of an LC circuit?
What is the formula for the natural frequency of an LC circuit?
When does resonance occur in an LC circuit?
When does resonance occur in an LC circuit?
When external emf matches natural frequency
At the resonance frequency , what happens to the stored energy in an LC circuit?
At the resonance frequency , what happens to the stored energy in an LC circuit?
It is maximal
What is the bandwidth of an LC circuit?
What is the bandwidth of an LC circuit?
Frequency range where energy is at least 50% of maximum
What does a high Q-factor indicate about an LC resonance filter?
What does a high Q-factor indicate about an LC resonance filter?
Narrow bandwidth with less noise