A charge {q₁} exerts some force on a second charge {q₂} . If third charge {q₃} is brought near

English

Gujarati

Hindi

1. Electric Charges and Fields

easy

A charge ${q_1}$ exerts some force on a second charge ${q_2}$. If third charge ${q_3}$ is brought near, the force of ${q_1}$ exerted on ${q_2}$

A

Decreases

B

Increases

C

Remains unchanged

D

Increases if ${q_3}$ is of the same sign as ${q_1}$ and decreases if ${q_3}$ is of opposite sign

Solution

(c) The force will still remain $\frac{{{q_1}{q_2}}}{{4\pi {\varepsilon _0}{r^2}}}$

Standard 12

Physics

Share

Similar Questions

When the distance between the charged particles is halved, the force between them becomes

easy

A paisa coin is made up of $\mathrm{Al – Mg}$ alloy and weighs $0.75\, g$. It has a square shape and its diagonal measures $17$ $\mathrm{mm}$. It is electrically neutral and contains equal amounts of positive and negative charges.

medium

Four identical pendulums are made by attaching a small ball of mass $100 \,g$ on a $20 \,cm$ long thread and suspended from the same point. Now, each ball is given charge $Q$, so that balls move away from each other with each thread making an angle of $45^{\circ}$ from the vertical. The value of $Q$ is close to …………..$\mu C$ $\left(\frac{1}{4 \pi \varepsilon_0}=9 \times 10^9\right.$ in $SI$ units $)$

normal

(KVPY-2017)

Four charges are arranged at the corners of a square $ABCD$, as shown in the adjoining figure. The force on the charge kept at the centre $O$ is

medium

Two charges each of $1\;coulomb$ are at a distance $1\,km$ apart, the force between them is

easy