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MHz. (a) What inductance is needed to Quiz

12 questions physics Grades 9-12

The question sheet

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  1. In problem p1150-b16, the inductance is connected to a capacitor of what value?

    • 2.50 nF
    • 25.0 nF
    • 2.50 pF
    • 108 pF
    Reveal answer

    Answer: 2.50 pF

    Source evidence

    PDF page 1150: produce this resonant frequency if it is connected to a 2.50 pF capacitor? (b) The capacitor is variable, to allow the resonant frequency to be adjusted to as high as 108 MHz. What must the capacitance be at this frequency?

  2. In problem p1150-b16, to how high a resonant frequency must the variable capacitor allow adjustment?

    • 5.00 kHz
    • 400 Hz
    • 120 Hz
    • 108 MHz
    Reveal answer

    Answer: 108 MHz

    Source evidence

    PDF page 1150: produce this resonant frequency if it is connected to a 2.50 pF capacitor? (b) The capacitor is variable, to allow the resonant frequency to be adjusted to as high as 108 MHz. What must the capacitance be at this frequency?

  3. In problem p1150-b18, at what frequency is the circuit's impedance first found?

    • 7.50 kHz
    • 500 Hz
    • 5.00 kHz
    • 120 Hz
    Reveal answer

    Answer: 120 Hz

    Source evidence

    PDF page 1150: resistor, a inductor, and an capacitor.(a) Find the circuit’s impedance at 120 Hz. (b) Find the circuit’s impedance at 5.00 kHz. (c) If the voltage source has , what is at each frequency? (d) What is the resonant frequency of the circuit? (e) What is at resonance?

  4. In problem p1150-b18, part (b) asks for the impedance at what frequency?

    • 500 Hz
    • 8000 Hz
    • 5.00 kHz
    • 120 Hz
    Reveal answer

    Answer: 5.00 kHz

    Source evidence

    PDF page 1150: resistor, a inductor, and an capacitor.(a) Find the circuit’s impedance at 120 Hz. (b) Find the circuit’s impedance at 5.00 kHz. (c) If the voltage source has , what is at each frequency? (d) What is the resonant frequency of the circuit? (e) What is at resonance?

  5. In problem p1150-b20, what is the capacitance of the capacitor used?

    • 2.50 pF
    • 25.0 mH
    • 25.0 nF
    • 400 nF
    Reveal answer

    Answer: 25.0 nF

    Source evidence

    PDF page 1150: resistor, a inductor, and a 25.0 nF capacitor. (a) Find the circuit’s impedance at 500 Hz. (b) Find the circuit’s impedance at 7.50 kHz. (c) If the voltage source has , what is at each frequency? (d) What is the resonant

  6. In problem p1150-b20, at what frequency is the impedance first found?

    • 120 Hz
    • 5.00 kHz
    • 500 Hz
    • 8000 Hz
    Reveal answer

    Answer: 500 Hz

    Source evidence

    PDF page 1150: resistor, a inductor, and a 25.0 nF capacitor. (a) Find the circuit’s impedance at 500 Hz. (b) Find the circuit’s impedance at 7.50 kHz. (c) If the voltage source has , what is at each frequency? (d) What is the resonant

  7. In problem p1150-b24, part (b) asks for the phase angle at what frequency?

    • 8000 Hz
    • 500 Hz
    • 5.00 kHz
    • 120 Hz
    Reveal answer

    Answer: 120 Hz

    Source evidence

    PDF page 1150: resistor, a inductor, and an capacitor. (a) Find the power factor at . (b) What is the phase angle at 120 Hz? (c) What is the average power at 120 Hz? (d) Find the average power at the circuit’s resonant frequency.

  8. In problem p1150-b24, part (a) asks students to find what quantity?

    • The impedance
    • The power factor
    • The resonant frequency
    • The capacitance
    Reveal answer

    Answer: The power factor

    Source evidence

    PDF page 1150: resistor, a inductor, and an capacitor. (a) Find the power factor at . (b) What is the phase angle at 120 Hz? (c) What is the average power at 120 Hz? (d) Find the average power at the circuit’s resonant frequency.

  9. In problem p1150-b28, what inductance value is specified?

    • 25.0 mH
    • 2.50 pF
    • 400 mH
    • 25.0 nF
    Reveal answer

    Answer: 25.0 mH

    Source evidence

    PDF page 1150: resistor and a 25.0 mH inductor. At 8000 Hz, the phase angle is . (a) What is the impedance? (b) Find the circuit’s capacitance. (c) If is applied, what is the average power supplied?

  10. In problem p1150-b28, at what frequency is the phase angle given?

    • 500 Hz
    • 120 Hz
    • 5.00 kHz
    • 8000 Hz
    Reveal answer

    Answer: 8000 Hz

    Source evidence

    PDF page 1150: resistor and a 25.0 mH inductor. At 8000 Hz, the phase angle is . (a) What is the impedance? (b) Find the circuit’s capacitance. (c) If is applied, what is the average power supplied?

  11. In problem p1150-b28, part (b) asks students to find what?

    • The impedance
    • The power factor
    • The phase angle
    • The circuit's capacitance
    Reveal answer

    Answer: The circuit's capacitance

    Source evidence

    PDF page 1150: resistor and a 25.0 mH inductor. At 8000 Hz, the phase angle is . (a) What is the impedance? (b) Find the circuit’s capacitance. (c) If is applied, what is the average power supplied?

  12. In problem p1150-b32, the wire loop is rotated at what rate?

    • 8000 cycles per second
    • 120 cycles per second
    • 500 cycles per second
    • 400 cycles per second
    Reveal answer

    Answer: 400 cycles per second

    Source evidence

    PDF page 1150: be used to detect a magnetic field. The wire is made into a single square loop and rotated at a rate of 400 cycles per second. (a) If the magnetic field is 0.02000 T, what is the magnitude of the average emf that can be generated in the first quarter cycle, provided the loop is initially oriented in a plane perpendicular to the magnetic field? (b) Is there a difference in the magnitude of the average emf generated if the wire is made into two square loops and rotated at the same rate, starting with the same orientation of the loops as that of the loop in part a? If so, what is the average emf possible for the first quarter cycle for two loops being rotated at 400 cycles per second in the magnetic field? (c) If the wire is made into a figure eight, what is the average emf for the first quarter cycle that can be generated by rotating it at 400 cycles per second in the magnetic field, again starting with the same orientation of the oops with respect to the magnetic field? The wire crosses itself in this arrangement. (d) Does the shape of the loop matter?

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