Topic
Q:
Zwei \( 7 \mu \mathrm{~F} \) Kondensatoren sind parallel an \( 135 \mathrm{~V} / 200 \mathrm{~Hz} \) angeschlossen.
a) Wie gross sind die Teilstromwerte?
b) Wie gross muss ein Wirkwiderstand sein, wenn durch dessen Parallelschaltung der Pha-
senverschiebungswinkel noch \( 45^{\circ} \) beträgt?
c) Wie gross wird der Phasenverschiebungswinkel bei Ausfall eines Kondensators?
Q:
A \( 5 \Omega \) resistor and a variable resistor of resistance \( R \) are placed in parallel. The expression for the resulting resist
given by \( R_{T}=\frac{5 R}{5+R} \). Determine the limiting value of \( R_{T} \) as \( R \rightarrow \infty \).
The limiting value of \( R_{T} \) is
(Simplify your answer.)
Q:
Acceleration depends on which two factors?
A) mass and position
B) net force and mass
C) mass and velocity
D) position and net force
Q:
5) When two forces act in the same direction on an object, the net force is found by
the forces.
Q:
4) According to Newton's second law of motion, a larger force acting on an object causes a
greater
Q:
3) Balanced forces acting on an object cause the object to accelerate.
True
False
Q:
2. A small object is placed 6 cm away from a
converging lens of focal length 10 cm . Find
the
a) nature of the image. [ virtual]
b) position of the image. [ 15 cm from lens
c) magnification of the image. [2.5]
Q:
A convex lens produces an inverted image
magnified four times. If the distance of the
object from the lens is 5 cm , what is the focal
length of the lens? [ 4 cm ]
Q:
7. Describe and quantify the amount of potential difference across
components in series \& parallel circuits
Q:
A convex lens produces an inverted image
magnified four times. If the distance of the
object from the lens is 5 cm , what is the focal
length of the lens? [ 4 cm ]
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