Match the items in column-I to the items in column-II: Column-I column-II (i) electric current (a) volt (ii) potential difference (b) ohm meter (iii) specific resistance (c) watt (vi) electric power (d) joule (v) electrical energy (e) ampere

(i) electric current- (e) ampere SI unit of electric current is ampere. An electric current is defined as the rate of flow of charges. One ampere is the current flowing through a conductor when one coulomb of charge flows in one second. (ii) potential difference- (a) volt Volt is the SI unit of potential difference. A potential difference is the work done on unit positive test charge in moving that charge from infinity to a point in an electric field. When one joule of work is done in moving of a charge of one coulomb from infinity to a point in an electric field then the electric potential of that point is one volt. (iii) specific resistance- (b) ohm meter Resistivity of a conductor is also called specific resistance. This is the property of a material which shows that how much resistance a material offers in its unit length and in unit cross-section area. This does not depend on physical properties of the wire. It depends on temperature and nature of material. (iv) electric power- (c) watt Electric power is defined as the rate of consumption of electric energy. Its SI unit is watt. When one joule of energy is consumed by an appliance in one second then power of that appliance is on watt. (v) electrical energy- (d) joule Electrical energy is the energy consumed by any device which makes the device able to work.Its SI unit is joule. Column-I column-II (i) electric current (e) ampere (ii) potential difference (a) volt (iii) specific resistance (b) ohm meter (vi) electric power (c) watt (v) electrical energy (d) joule

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Science Standard 10>Chapter 4 - Electricity>TEXTBOOK EVALUATION>Q 5

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Important Questions on Electricity

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Science Standard 10>Chapter 4 - Electricity>TEXTBOOK EVALUATION>Q 1

State whether the following statement is true of false. If false correct the statement.

Ohm's law states the relationship between power and voltage.

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Science Standard 10>Chapter 4 - Electricity>TEXTBOOK EVALUATION>Q 2

State whether the following statement is true of false. If false correct the statement.

MCB is used to protect household electrical appliances.

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Science Standard 10>Chapter 4 - Electricity>TEXTBOOK EVALUATION>Q 3

State whether the following statement is true of false. If false correct the statement.

The SI unit of electric current is the coulomb.

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Science Standard 10>Chapter 4 - Electricity>TEXTBOOK EVALUATION>Q 4

State whether the following statement is true or false. If false correct the statement.

One unit of electrical energy consumed is equal to the $1000$ kilowatt hour.

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Science Standard 10>Chapter 4 - Electricity>TEXTBOOK EVALUATION>Q 5

State whether the following statement is true or false. If false correct the statement.

The effective resistance of three resistors connected in series is lesser than the lowest of the individual resistances.

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Science Standard 10>Chapter 4 - Electricity>TEXTBOOK EVALUATION>Q 1

Match the items in column-I to the items in column-II:

Column-I	column-II
(i) electric current	(a) volt
(ii) potential difference	(b) ohm meter
(iii) specific resistance	(c) watt
(vi) electric power	(d) joule
(v) electrical energy	(e) ampere