Transcript Knight_ch35

Chapter 35
The magnitude of the
instantaneous value of
the emf represented by
this phasor is
1. increasing.
2. decreasing.
3. constant.
4. It’s not possible to tell without knowing t.
The magnitude of the
instantaneous value of
the emf represented by
this phasor is
1. increasing.
2. decreasing.
3. constant.
4. It’s not possible to tell without knowing t.
The resistor whose voltage
and current phasors are
shown here has resistance R
1. > 1 Ω.
2. < 1 Ω.
3. It’s not possible to tell.
The resistor whose voltage
and current phasors are
shown here has resistance R
1. > 1 Ω.
2. < 1 Ω.
3. It’s not possible to tell.
What is the capacitive reactance of “no
capacitor,” just a continuous wire?
1. 0
2. ∞
3. Undefined
What is the capacitive reactance of “no
capacitor,” just a continuous wire?
1. 0
2. ∞
3. Undefined
Rank in order, from largest to smallest, the cross-over
frequencies
of these four circuits.
Rank in order, from largest to smallest, the cross-over
frequencies
of these four circuits.
A series RLC circuit has VC = 5.0 V, VR = 7.0 V, and
VL = 9.0 V. Is the frequency above, below or equal
to the resonance frequency?
1. Above the resonance frequency
2. Below the resonance frequency
3. Equal to the resonance frequency
A series RLC circuit has VC = 5.0 V, VR = 7.0 V, and
VL = 9.0 V. Is the frequency above, below or equal
to the resonance frequency?
1. Above the resonance frequency
2. Below the resonance frequency
3. Equal to the resonance frequency
The emf and the current in
a series RLC circuit
oscillate as shown. Which
of the following would
increase the rate at which
energy is supplied to the
circuit?
1. Decrease ε0
2. Increase L
3. Increase C
4. Decrease L
The emf and the current in
a series RLC circuit
oscillate as shown. Which
of the following would
increase the rate at which
energy is supplied to the
circuit?
1. Decrease ε0
2. Increase L
3. Increase C
4. Decrease L
Chapter 35
Reading Quiz
The analysis of AC circuits uses a rotating vector called a
1. rotor.
2. wiggler.
3. phasor.
4. motor.
5. variator.
The analysis of AC circuits uses a rotating vector called a
1. rotor.
2. wiggler.
3. phasor.
4. motor.
5. variator.
In a capacitor, the peak current and
peak voltage are related by the
1. capacitive resistance.
2. capacitive reactance.
3. capacitive impedance.
4. capacitive inductance.
In a capacitor, the peak current and
peak voltage are related by the
1. capacitive resistance.
2. capacitive reactance.
3. capacitive impedance.
4. capacitive inductance.
In a series RLC circuit, what quantity
is maximum at resonance?
1. The voltage
2. The current
3. The impedance
4. The phase
In a series RLC circuit, what quantity
is maximum at resonance?
1. The voltage
2. The current
3. The impedance
4. The phase