NEW
Font size
WorksheetsF5 electronic
Total questions: 14
Worksheet time: 7mins
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
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
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
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?
An n-type semiconductor is produced when some 0f the germanium atoms are replaced with
divalent atoms
trivalent atoms
tetravalent atoms
pentavalent atoms
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?
Figure shows an npn transistor connected in a circuit. Which of the following is true?
Ic>IB>IE
IE>IC>IB
IB>IC>IE
IC>IE>IB
The diagram shows a circuit containing bulbs X, Y and Z. Which bulb in the circuit will light up when the switch is on
A Z only
B X and Y only
C Y and Z only
D X, Y and Z
How many electrons are there in the outer most shell of Silicon
5
4
3
8
what type of device is this?
it is a transistor
it is a diode
it is an amplifier
it is a power supply
what is this?
it is a transistor
it is a diode
it is a capacitor
it is a resistance
what is the correct expression of the law of Ohm?
V = R/I
R = V*I
I = V/R
R = V*I
what is a transistor?
a current amplifier
a rectifier
a power supply
an adder device
