Electron | MCQs

Explanation

Electronics is the branch of science that studies the flow and control of electrons, especially in circuits.

It uses active devices (like transistors and diodes) to control electron flow through amplification and rectification.

Explanation

A circuit is a closed path through which electrons (electric current) flow.

It typically includes components like resistors, batteries, and wires, allowing controlled movement of current.

Explanation

PEMRA (Pakistan Electronic Media Regulatory Authority) is the authorized agency to sanction licenses for cable television and FM radio in Pakistan.

PEMRA was established in 2002 to regulate and monitor electronic media in Pakistan, including television, radio, and digital media.

PEMRA's responsibilities include:

• Issuing licenses for cable television and FM radio
• Regulating content and advertising on electronic media
• Ensuring compliance with media regulations and codes of conduct
• Protecting consumer rights and interests

Explanation

A computer mainly consists of electronic circuits.

They include integrated circuits (chips) and other components that enable the processing and transmission of data.

Explanation

A logic gate is a basic building block of a digital circuit that performs logical operations (AND, OR, NOT).

It processes binary inputs (0s and 1s) to produce a single binary output.

Explanation

This machine will be used for Pakistan Election 2023 by ECP.

The Government of Pakistan (PTI) Passed 33 bills from Parliament on 17.11.2021 including EVM.

Explanation

• The shielding effect decreases across a period.
• This is because the increasing nuclear charge is not fully counterbalanced by the same number of inner electrons, resulting in a weaker shielding effect.

Explanation

Explanation

The K orbit, also known as the first electron shell.

• It can hold a maximum of 2 electrons.

The L orbit, also known as the second electron shell.

• It can hold a maximum of 8 electrons.

The M orbit, also known as the third electron shell.

• It can hold a maximum of 18 electrons.

Explanation

When the 6d orbital is completely filled, the next electron enters the 7p orbital.

This is based on the Aufbau principle, which dictates that electrons first occupy the lowest energy levels available.

After the 6d orbitals (which can hold up to 10 electrons) are filled.

The 7p orbitals (which can hold up to 6 electrons) become the next lowest energy.