Quiz Chapter 5 Electronics (F5(

Diagram 1 shows a cathode being heated by a filament.
Which particle is emitted from the cathode?

• Proton

• Neutron

• Electron

• Neucleon

Which diagram shows the correct motion of the beam of electron in magnetic field?

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What is the speed of electron in an electron gun that has

potential difference 6000 V across it?
(Refer to your notes for the charge and mass of an electron)

• 1.15 x 10^17 m/s

• 3.26 x 10^7 m/s

• 4.62 x 10^7 m/s

• 2.13 x 10^15 m/s

Diagram shows a circuit consisting of a diode and a bulb.

When the switch is on, the bulb does not light up.

What needs to be done to light up the bulb?
I. Turn on the switch

II. Reverse the diode connection
III. Connect a resistor parallel to the bulb

• I and II only

• II and III only

• I and III only

• All of the above

Based on the diagram, which statement is correct?

• Only Bulb M is brightened up

• Only Bulb N is brightened up

• Both Bulb M and Bulb N are not brightened

• Both Bulb M and Bulb N are brightened

Diagram shows a circuit used to produce full-wave rectification.
Which arrangement should be the diodes arranged to produce this rectification?

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Diagram shows the structure of a cathode ray oscilloscope.
Which part of it occurs thermionic emission when the switches S1 and S2 are turned on?

• A

• B

• C

• D

The diagram shows a transistor circuit to switch on a light bulb during the day. What changes need to be made to light the bulb at night?

• Interchange R1 and LDR

• Interchange R1 and R3

• Change the battery terminals

• Convert an npn transistor to a pnp transistor

Diagram shows a cathode ray oscilloscope (CRO) connected to an electrical circuit.
Which diagram shows the trace displayed on the screen of the CRO?

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Diagram shows a transistor circuit. Resistor P has a resistance of 10 kΩ. In order to light the bulb, the potential difference across resistor P must be at least 2V.
What is the maximum value of resistor S when the bulb is light up?

• 10 kV

• 40 kV

• 50 kV

• 60 kV