Chapter 5 Form 5 - Electronic

Chapter 5 Form 5 - Electronic

11th Grade

10 Qs

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Chapter 5 Form 5 - Electronic

Chapter 5 Form 5 - Electronic

Assessment

Quiz

Physics

11th Grade

Practice Problem

Medium

Created by

Nurul Asma Johari

Used 381+ times

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The emission of electrons from the surface of a heated metal is called

Vaporization

Condensation

Cathode emission

Thermionic emission

2.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

An electron is accelerated between anode and cathode through a potential difference 8000 V. What is the maximum speed of the electron?

[ e =1.6 x 10 -19 C and m= 9 x 10 -31 ]

5.3 x 107 m s-1

4.3 x 106 m s-1

3.3 x 104 m s-1

2.3 x 103 m s-1

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

In a vacuum tube, the high voltage across anode and cathode used to

control the fialament temperature

control the number of electrons

produce narrow beam electrons

accelerate electrons with a high speed

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which diagram shows the correct movement of an electron beam in an electric field?

Media Image
Media Image
Media Image

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the function of a diode?

Stores electric charge

Acts as a current amplifier

Acts as an automatic switch

Allows the current to pass in one direction only

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

Diagram shows a full wave rectifier circuit.

The output waves become smooth because

the resistance of the resistor is always increasing and decreasing

the charges in the capacitor is always increasing and decreasing

the number of electrons in the CRO is always increasing and decreasing

the current flows through the diode is always increasing and decreasing

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following diagram shows the bulb does not light up.

Media Image
Media Image
Media Image
Media Image

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