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Course: Ncert-Class 10 - Science - Physics
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Ncert-Class 10 - Science - Physics

Chapter 10 - Light - Reflection and Refraction

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Chapter 11:The Human Eye And The Colourful World

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Chapter 12:Electricity

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Chapter13: Magnetic Effects Of Electric Current

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Assertion and Reason

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Case Based Question

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Text lesson

Practice Test-Class 10 -Science- Physics-Chapter 12:Electricity

Welcome to your Ncert - class 10- science - Chapter 11 – Electricity 1

A bulb rated at (100W-200V) is used on a 100 V line. The current in the bulb is

The wires of same dimension but different resistivities ρ 1 and ρ2 are connected in parallel. The equivalent resistivity of the combination is

A copper wire of resistance 

R is cut into ten parts of equal length. Two-piece are joined in series and then five such combinations are joined in parallel. The new combination will have resistance.

Three equal resistors connected in series across a source of emf together dissipate 

10
10 watt. If the same resistors are connected in parallel across the same emf, then the power dissipated will be:

A wire of resistance R divided in 10 equal parts. These parts are connected in parallel. Then resistance equivalent is

A metal wire of resistance R is cut into three equal pieces which are then connected side by side to form a new wire, the length of which is equal to one third of the original length. The resistance of this new wire is:-

An electric lamp whose resistance of 10 ohm, and a conductor of 2 ohm resistance are connected in series with a 6 V battery. The total current through the circuit and the potential difference across the electric lamp are :

When current is passed through a conductor, the heat produced in it depends upon

I. The material of the conductor
II. The current flowing through the conductor.
III. The time for which the current flows.

Two wires A and B of same metal are connected in parallel. Wire A has length l and radius r and wire B has length 2l and radius 

2r. then the ratio of total resistance of parallel combination and the resistance of wire A is

The electric passing through a metallic wire produces heat because of

If a 5V battery is provoding 2A current in a conductor then what is the resistance of conductor ?

What happens to the current in each resistor when resistors of different values in parallel combination are connected to a source of electricity?

Choose the statement which is not correct in the case of an electric fuse.

Two wires of the same material are given. The first wire is twice as long as the second and has twice the diameter of the second. The resistance of the first will be.

Which of the following statement is false

An electric heater kept in vacuum is heated continuously by passing electric current. Its temperature

10 wires (same length, same area, same material) are connected in parallel and each has 1Ω resistance, then the equivalent resistance will be

When 25 A current with 10 ohm resistance flowing per second then the power lost in the cable during transmission is

The current in a kettle is 

10 A and the kettle is protected by a 13 A fuse. The owner of the kettle replaces the 13 A fuse with a 3 A fuse. What happens when the kettle is switched on?

If two identical heaters each rated as (1000W-220V) are connected in parallel to 220V, then the total power consumed is?