SSM An ac generator has emf ℰ = ℰ m sin( ω d t = π /4), where ℰ m = 30.0 V and ω d = 350 rad/s. The current produced in a connected circuit is i(t) = I sin ( ω d t = 3 π/ 4 ), where I = 620 mA. At what time after t = 0 does (a) the generator emf first reach a maximum and (b) the current first reach a maximum? (c) The circuit contains a single element other than the generator. Is it a capacitor, an inductor, or a resistor? Justify your answer. (d) What is the value of the capacitance, inductance, or resistance, as the case may be?
SSM An ac generator has emf ℰ = ℰ m sin( ω d t = π /4), where ℰ m = 30.0 V and ω d = 350 rad/s. The current produced in a connected circuit is i(t) = I sin ( ω d t = 3 π/ 4 ), where I = 620 mA. At what time after t = 0 does (a) the generator emf first reach a maximum and (b) the current first reach a maximum? (c) The circuit contains a single element other than the generator. Is it a capacitor, an inductor, or a resistor? Justify your answer. (d) What is the value of the capacitance, inductance, or resistance, as the case may be?
SSM An ac generator has emf ℰ = ℰm sin(ωdt = π/4), where ℰm = 30.0 V and ωd= 350 rad/s. The current produced in a connected circuit is i(t) = I sin (ωdt = 3
π/
4), where I = 620 mA. At what time after t = 0 does (a) the generator emf first reach a maximum and (b) the current first reach a maximum? (c) The circuit contains a single element other than the generator. Is it a capacitor, an inductor, or a resistor? Justify your answer. (d) What is the value of the capacitance, inductance, or resistance, as the case may be?
m
In the figure, an ac generator with emf & = Esin wat, where 8 = 24.2 V and wa= 386 rad/s, is connected to a 4.47 uF capacitor. (a)
What is the maximum value of the current? (b) When the current is a maximum, what is the emf of the generator? (c) When the emf of
the generator is - 12.7 V and increasing in magnitude, what is the current?
HI
(a) Number i
(b) Number i
(c) Number i
Units
Units
Units
8(
An ac generator produces emf 8 = Em sin(wat - π/4),
where 8m = 31.0 V and wd = 360 rad/s. The current in
the circuit attached to the generator is given by i(t) =
I sin(wat + π/4), where I = 634 mA. (a) At what time
after t = 0 does the generator emf first reach a
maximum? (b) At what time after t = 0 does the
current first reach a maximum? (c) The circuit
contains a single element other than the generator. Is
it a capacitor, an inductor, or a resistor? (d) What is
the value of the capacitance, inductance, or
resistance, as the case may be?
(a) Number i .006544
(b) Number i
(c)
capacitor
(d) Number
i
Units
Units
ms
ms
Units F
The output EMF of a generator is given by
V (t) = a sin(wt),
where a = 231 V.
Find the rms current in the circuit when
this generator is connected to a 118 N resistor.
Answer in units of A.
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