
ELECTRONICS (F5)
Authored by LIM Moe
Physics
10th Grade
Used 224+ times

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10 questions
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1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Which of the following is NOT a property of a cathode rays?
They travel in straight lines
They are deflected by an electric field
They are not affected by gravity
They have momentum and energy
2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Which of the following shows the correct path of an electron beam in a magnetic field?
3.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Figure shows a trace displayed on the screen of a C.R.O. The Y-gain is set to 5 V cm-1 What is the peak voltage?
0 V
5 V
20 V
25 V
4.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Figure shows a bulb and a diode connected to a battery in series. When switch, S is closed, the bulb does not light up. The bulb can be lighted up by
replacing the wire connecting to the bub
increasing the number of dry cells
reversing the connection of the battery
connecting a resistor parellel to the bulbb
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Figure shows a bridge rectifier connected to a sinusoidal alternating voltage supply. A load resistor is connected across the output terminals P and Q. Which of the following traces would be displayed on the screen if a C.R.O. is connected across PQ?
6.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
An n-type semiconductor is produced when some 0f the germanium atoms are replaced with
divalent atoms
trivalent atoms
tetravalent atoms
pentavalent atoms
7.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
A capacitor is used to smooth out the output voltage of a half-wave rectifier. In which of the following circuits is the capacitor correctly connected?
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