Question
Give brief information about an electric charge.
✓
Answer
- An electric charge is a fundamental and an intrinsic property of a matter, like mass.
- There are two types of electric charges:
- $(1)$ positive charge and $(2)$ negative charge.
- By convention, the charge acquired by a glass rod (rubbed with silk cloth) is called positive charge and the charge acquired by an ebonite rod (rubbed with woollen cloth) is called negative charge.
- The charge carried by a proton is positive and that carried by an electron is negative.
- Magnitude (value) of electric charge on a proton and on an electron is same.
- Further, a body gets positively charged if it loses electrons and negatively charged if it gains electrons.
- Unlike (i.e., opposite) charges attract each other and like (i.e., similar) charges repel each other.
- The $SI$ unit of electric charge is the coulomb which is denoted by the letter $C$.
- An electron possesses a negative charge of $1.6 × 10^{-19}$C whereas a proton possesses a positive charge of $1.6 × 10^{-19}$C.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
$(a)$ What is unisexual and bisexual flower ? Give its example
$(b)$ What are the changes in flower after fertilisation
→$(b)$ What are the changes in flower after fertilisation
An electric iron consumes energy at a rate of $840 \ W$ , when heating is at the maximum rate and $360 \ W$ , when heating is at the minimum. The voltage is $220 \ V$ . What are the current and the resistance in each case?
→Explain asexual reproduction in Hydra with the help of diagram.
Derive the formula of magnification $m =\frac{v}{-u}$ in case of a concave mirror.
→Explain the need to use more complex ways of reproduction for most of multi-cellular organisms.
A glass slab made of a material of refractive index n1is kept in a medium of refractive index n2. A light ray is incident on the slak Draw the path of ray of light emerging from the glass slab. If
(a)n1>n2 (b) n1= n2(c) n1 < n2
(a)n1>n2 (b) n1= n2(c) n1 < n2
Describe the formation of coal and petroleum.
Vishva noticed in a dhaba around 50 bulbs, each of 100 W all were glowing. She calculated the cost of electricity consumed in one hour and told the dhaba owner to reduce the expenses and at the same time save electricity by using CFL bulbs instead of ordinary filament-type bulbs.
(1) What would be the cost of electric energy if 50 bulbs, each of 100 W , are used for one hour? 1 unit costs ₹ 5 .
(2) What is a CFL?
(3) What value did Vishva display in the above case?
(1) What would be the cost of electric energy if 50 bulbs, each of 100 W , are used for one hour? 1 unit costs ₹ 5 .
(2) What is a CFL?
(3) What value did Vishva display in the above case?
State the common characteristics of acids and bases.