Electricity and Magnetism Archives

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AdminEnlightened

Asked: September 4, 2020In: Electricity and Magnetism

CONTROL GRID

The control grid in a cathode ray oscilloscope (CRO) is used to control the brightness of the beam on the screen. Explain how this is achieved.

PhochekiBegginer

Asked: April 15, 2021In: Electricity and Magnetism

Cells and simple circuit

State two defects of a simple cell and how it can be controlled

AdminEnlightened

Asked: January 19, 2022In: Electricity and Magnetism

Factors affecting capacitance

State and explain factors that affect capacitance of parallel-plate capacitor.

KipkoechProfessional

Asked: February 11, 2021In: Electricity and Magnetism

Magnetism

Explain why soft iron keepers are suitable for storing magnets.

AdminEnlightened

Asked: September 5, 2020In: Electricity and Magnetism

Charged Particle

What happens when a charged particle accelerates?

David K. KTeacher

Asked: September 10, 2020In: Electricity and Magnetism

Application of capacitor

Explain the purpose of the capacitor in an electric bell

KeterclementTeacher

Asked: April 26, 2022In: Electricity and Magnetism

Fleming’s rules

What is the difference in applications of ;Fleming’s Right hand Rule and Fleming’s Left Hand Rule?

Hempstone

Asked: November 18, 2021In: Electricity and Magnetism

Cells

Given that the cells are identical, what would be the voltmeter reading?

dennismaloba

Asked: April 27, 2021In: Electricity and Magnetism

Magnetism

Why is it that the magnetic strength is high at the poles

Maxima the Dr

Asked: October 26, 2021In: Electricity and Magnetism

Electricity

Why is that when a bird lands on overhead electric wires it is not electrocuted but human being it is

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On: December 11, 2020 Comments: 98 Views: 829

Features of a common thermometer

Bulb – Carries the liquid in the thermometer. It has a thin glass wall for effective heat transmission between the liquid and body whose temperature is taken. Capillary bore – Liquid expands and contracts along the capillary tube. It isnarrow for high ...

On: September 16, 2020 Comments: 52 Views: 371

[Explained] Newton’s Third Law

Sir Isaac Newton first presented his three laws of motion in the “Principia Mathematica Philosophiae Naturalis” in 1686. His third law states that for every action (force) in nature there is an equal and opposite reaction. In other words, if object A ...

On: December 11, 2020 Comments: 95 Views: 346

Why liquids are poor conductors of Heat

Pure liquids have molecules further apart from each other. Although molecules move about within the liquid, they are slow to pass heat to other regions compared to the free electrons in metals. This is because there are large inter-molecular distances ...

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