Start learning →

AP Intermediate 2nd Year Electromagnetic Induction & Alternating Current — practice questions — page 4

Explore 116 free Electromagnetic Induction & Alternating Current questions in AP Intermediate 2nd Year Physics. Open each question or exercise to read its content, reference answers and available explanation.

Practise Electromagnetic Induction & Alternating Current with Quill →

Electromagnetic Induction & Alternating Current questions and exercises with answers

Showing questions 91–116 of 116.

The total opposition of an ac circuit is called its:Read the answer and worked solution →Alternating voltages are stepped up or down by means of:Read the answer and worked solution →The rms current equals the dc current that would produce the same:Read the answer and worked solution →At resonance in a series LCR circuit, the impedance is:Read the answer and worked solution →At resonance the current amplitude in the circuit is:Read the answer and worked solution →Besides an inductor, resonance needs the circuit to contain a:Read the answer and worked solution →The quantity cos of the phase angle is called the:Read the answer and worked solution →A current that dissipates no power is referred to as:Read the answer and worked solution →Maximum power is dissipated in a series LCR circuit at:Read the answer and worked solution →Inductive reactance is directly proportional to the:Read the answer and worked solution →A radio is tuned to a station by matching the resonant frequency of:Read the answer and worked solution →Resonance is described as a phenomenon that is:Read the answer and worked solution →The impedance of a series LCR circuit at resonance equals:Read the answer and worked solution →A lagging wattless current is neutralised by adding an equal:Read the answer and worked solution →Order the induction chainRead the answer and worked solution →Name the induction quantityRead the answer and worked solution →Match the induction termRead the answer and worked solution →Match the ac circuit termRead the answer and worked solution →True or false about ac circuitsRead the answer and worked solution →Inductor or capacitor?Read the answer and worked solution →The SI unit of inductance is the:Read the answer and worked solution →The emf Blv produced by a moving conductor is called:Read the answer and worked solution →The SI unit of reactance is the:Read the answer and worked solution →At the resonant frequency, the two reactances are:Read the answer and worked solution →Lenz's law fixes which feature of the induced emf?Read the answer and worked solution →NEET · Physics · AC — RMS vs PeakRead the answer and worked solution →

Worked practice questions

The total opposition of an ac circuit is called its:

  1. Wattage
  2. Impedance
  3. Frequency
  4. Amplitude
Show answer and solution

Correct answer: B. Impedance

1. Resistance alone does not describe an ac circuit. 2. Reactances must be combined with it. 3. The combined quantity is the impedance Z. 4. So the answer is impedance. _Source: syllabus Physics, Ch 7 'Alternating Current'_

Open this question →

Alternating voltages are stepped up or down by means of:

  1. Capacitors
  2. Resistances
  3. Transformers
  4. Rectifiers
Show answer and solution

Correct answer: C. Transformers

1. Direct voltages cannot be changed this simply. 2. Alternating voltages can, which is why ac is used for supply. 3. The device that does it is the transformer. 4. So the answer is transformers. _Source: syllabus Physics, Ch 7 'Alternating Current'_

Open this question →

The rms current equals the dc current that would produce the same:

  1. Peak voltage
  2. Phase angle
  3. Time period
  4. Heating effect
Show answer and solution

Correct answer: D. Heating effect

1. The rms value is defined to make ac and dc comparable. 2. The comparison is made through the power dissipated. 3. It is the equivalent dc current giving the same heating. 4. So the answer is heating effect. _Source: syllabus Physics, Ch 7 'Alternating Current'_

Open this question →

How to practise

  1. Choose a Electromagnetic Induction & Alternating Current question and try to work out your answer.
  2. Open the question to check the correct answer and read its worked solution.
  3. Continue in the app for bite-sized lessons, explanations and review with Quill. You can start without creating an account.

Put it into practice

Continue with Electromagnetic Induction & Alternating Current practice for AP Intermediate 2nd Year. Read explanations as you go. No signup form needed to start.

Practise Electromagnetic Induction & Alternating Current →

More Physics topics

Moving Charges and MagnetismSemiconductor ElectronicsDual Nature of Radiation and MatterElectromagnetic WavesElectric Charges and FieldsRay Optics and Optical InstrumentsCurrent ElectricityAtoms and Nuclei