Table of Contents
Charging of Insulators
Since charge cannot flow through insulators, neither conduction nor induction can be used to charge, insulators, so in order to charge an insulator friction is used. Whenever an insulator is rubbed against a body exchange of electrons takes place between the two. This results in appearance of equal and opposite charges on the insulator and the other body. Thus the insulator is charged.
For example rubbing of plastic with fur, silk with glass causes charging of these things.
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Frictional Electricity
Last modified on:3 years agoReading Time:10Minutes What is frictional electricity? Frictional electricity, also known as static electricity, is the type of electricity that results from the friction or rubbing of two objects together. When two objects are rubbed against each other, the friction between them can cause the transfer of electrons from one object to the…
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Alternating Current
Last modified on:3 years agoReading Time:24Minutes What is Alternating Current (A.C.)? Alternating Current (AC) is an electrical current that periodically reverses direction in a circuit. Unlike Direct Current (DC), which flows only in one direction, AC constantly changes its polarity and magnitude over time. Explanation: In an AC circuit, electrons periodically switch direction, moving back and…
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Terminal Velocity
Last modified on:3 years agoReading Time:13Minutes What is Terminal Velocity? Terminal velocity is the constant maximum speed reached by an object in free fall or falling through a fluid (such as air or water) when the force of air resistance or fluid resistance becomes equal in magnitude and opposite in direction to the force of gravity…
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Numerical Problems Based on Ampere’s Circuital Law for Class 12 Physics
Last modified on:4 weeks agoReading Time:15Minutes Numerical Problems on Ampere’s Circuital Law Class 12 Physics · Moving Charges and Magnetism SQ Ampere’s Law and Solenoids Practice Set Apply $\oint \vec{B} \cdot d\vec{l} = \mu_0 I_{enclosed}$ and solenoid/toroid formulas Ch 4 · Moving Charges and Magnetism 1 A long solenoid consists of 20 turns per cm. What…
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Numerical Problems Based on Current Carrying Circular Loops for Class 12 Physics
Last modified on:4 weeks agoReading Time:11Minutes Numerical Problems on Current Carrying Circular Loops Class 12 Physics · Moving Charges and Magnetism SQ Magnetic Field of Circular Loops Practice Set Apply $B = \frac{\mu_0 N I}{2R}$ and superposition principle Ch 4 · Moving Charges and Magnetism 1 Consider a tightly wound 100 turn coil of radius 10…
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Numerical Problems Based on Applications of Biot-Savart Law for Class 12 Physics
Last modified on:4 weeks agoReading Time:11Minutes Numerical Problems on Applications of Biot-Savart Law Class 12 Physics · Moving Charges and Magnetism SQ Magnetic Field due to a Straight Wire Practice Set Apply $B = \frac{\mu_0 I}{2\pi r}$ for long straight conductors Ch 4 · Moving Charges and Magnetism 1 A straight wire carries a current of…
