Electric Charge

In general, metallic ropes are suspended on the carriers which take inflammable material. The reason is

A body is having $-2\mathrm{C}$charge. If ${10}^6$ electrons move out of the body every second, then time after which the body becomes neutral will be approximately

Two identical light conducting balls having different charges, are being suspended freely. They are pushed towards each other as shown in the given figure.

Which of the following options shows the correct position of the two balls, just after they touch each other?

High concentration of positive charges implies$:$

Four identical metallic sphere $A,B,C,D$. Sphere $A$ carries charge $q$, sphere $B$ carries $q$, sphere $C$ and $D$ are uncharged. Sphere $C$ touches $A$ and sphere $D$ touches $B$. Calculate the force between two spheres $A$ and $B$ if distance between them is halved.

What is static electricity?

${10}^{12} \alpha -$particle (nuclei of helium) falls per second on a neutral sphere. Calculate the time in which the sphere gets charged by $2\mathrm{\mu C}$.

A particle of mass $m$ has charge $q_0$ when it is at rest. When the particle moves with speed $v$, charge on the particle will becomes ($c$ is velocity of light in vacuum)

Explain about the interaction between charges.

Explain what is electric charge.

Explain the working principle of a gold$‐$leaf electroscope.

How can you find whether a body is conductor or an insulator with the help of a gold leaf electroscope?

Which electroscope is used to measure the charge of the body and its polarity? Explain in detail.

Explain the working of gold leaf electroscope with a diagram.

Two changes +Q and -2Q are located at points A and B as a horizontal line as shown below

The electric field is zero at a point is located at a finite distance

An insulated metallic sphere $\left(x\right)$ is charged and is covered by another insulated hollow metallic sphere $\left(y\right)$. If a connection is made between the two,

When ${10}^{19}$ electrons are removed from a neutral metal plate, the electric charge on it (in coulomb) is 

A positively charged glass rod is brought close to a metallic rod isolated from ground. The charge on the side of the metallic rod away from the glass rod will be

When a positively charged body is brought near the metal disc of a neutral electroscope, its leaves -

For two point charges ${\mathrm{q}}_1$ and ${\mathrm{q}}_2$, the product ${\mathrm{q}}_1{\mathrm{q}}_2<0$. What is the nature of the force between them?