NCERT Solutions for Class 10 Science Chapter 12: Electricity

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NCERT Solutions for Class 10 Science Chapter 12 Electricity are provided in this article. It covers all the important definitions, concepts, and methodologies that will be really beneficial for the students. The important topics that are included in this chapter are:

Ohm’s law
Resistance
Heating effect of electric current
Interrelation between P, V, I and R

Expected no. of Questions: 3-4 questions of around 6-7 marks.

Download PDF: NCERT Solutions for Class Class 10 Science Chapter 12 Electricity

NCERT Solutions for Class 10 Science Chapter 12

Class 10 Science Chapter 12 Electricity: Important Topics

Electricity is a type of energy that may be witnessed in both positive and negative forms, either naturally as lightning or manufactured artificially as a generator. When a stream of charged particles such as ions moves across space, this is referred to as an electric current. The standard unit of electric current is the ampere. It is defined as a charge flow rate of one coulomb per second. It is calculated as 6.2 1018 electrons per second in numerical terms.

1 ampere = 3 x 10⁹ esu per second

esu is an abbreviation for the electrostatic unit of charge.

C stands for Coulomb.

Ohm’s Law

Ohm’s law states that the resistance, or the ratio of voltage to current, for all or part of an electric circuit at a fixed temperature, is generally constant. Ohm's law may be expressed mathematically as V/I = R. The law had been established by 1827 as a result of the investigations of the German physicist Georg Simon Ohm.

Resistance

Resistance can be defined as a measure of the opposition to current flow in an electrical circuit. Resistance is measured in ohms, which is symbolized by the Greek letter omega (Ω). Ohms are named after Georg Simon Ohm, a German physicist who studied the relationship between voltage, current, and resistance.

Chapter Related Links:

Electric Current and Circuit	Resistivity	Resistors in Series
Difference between fuse and circuit breaker	Resistors in parallel	Heating Effect of Electric Current
Working of electric bell	Difference between Resistance and Resistivity	Electricity Revision Notes

Science Study Guides:

Physics Constants	Periodic Table	Named Reactions
Difference between in physics	Class 10 Science Notes	Difference between in chemistry

CBSE X Related Questions

1.
From the given situations, identify 'Chemotropic' and 'Geotropic' movements in parts of plants, respectively:
(i) Growth of pollen tube towards ovule.
(ii) Movement of sunflower towards sunlight.
(iii) Movement of root towards Earth/Gravity.
(iv) Movement of leaves due to breeze.
- (i) and (iii) respectively
- (iii) and (i) respectively
- (i), (ii) and (iii), (iv) respectively
- (i), (iii) and (ii), (iv) respectively
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2.
When an element 'X' reacts with water, it starts floating. Identify the element 'X':
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Rays from the sun converge at a point 25 cm behind a convex lens. The distance at which an object be placed in front of the lens to get a virtual image, is:
- 20 cm
- 40 cm
- 50 cm
- More than 50 cm
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4.
When you look at an object very close to your eyes, the:
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- Ciliary muscles of your eye get relaxed and the eye lens becomes thick.
- Ciliary muscles of your eye contract and the eye lens becomes thin.
- Ciliary muscles of your eye get relaxed and the eye lens becomes thin.
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Identify the part that controls the closing and opening of the stomatal pore in leaves of plants. Select the correct option.
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Sex is determined by different factors in various species. However, in human beings, it is determined genetically. Which amongst the following option(s) is/are correct for human beings ?
Gamete carrying X chromosome from female parent.
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Gamete carrying Y chromosome from male parent.
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- (i) and (iii)
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