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Name the Material Which is the Best Conductor of Electricity. - Science

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प्रश्न

Name the material which is the best conductor of electricity.

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उत्तर

Silver is the best conductor of electricity.

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अध्याय 1: Electricity - Exercise 4

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लखमीर सिंग Physics (Science) [English] Class 10
अध्याय 1 Electricity
Exercise 4 | Q 4

संबंधित प्रश्न

Find the expression for the resistors connected in series and write the two characteristics of it. (Draw figure).


How does the resistance of a pure metal change if its temperature decreases?


How does the presence of impurities in a metal affect its resistance?


The diagram below shows part of a circuit: 

 

If this arrangement of three resistors was to be replaced by a single resistor, its resistance should be:
 
(a) 9 Ω
(b) 4 Ω
(c) 6 Ω
(d) 18 Ω


What is electrical resistance? Write its SI unit.

Define resistivity of a metal.

The potential difference between the terminals of an electric iron is 240 V and the current flowing through it is 6 A. What is the resistance of the electric iron?

Calculate the equivalent resistance of the following combination of resistor r1, r2, r3, and r4


To increase the effective resistance in a circuit, the resistors are connected in _______________ .


How does the resistance of an alloy, vary with temperature?


Write an expression for the resistance of a conducting wire in terms of its length and area of cross-section.


You are provided with three resistors of resistance 1.0 Ω, 2.0 Ω and 3.0 Ω How would you connect them to obtain the total effective resistance 1.5 Ω? Draw diagram of the arrangement and check it by calculations.


Calculate the equivalent resistance between P and Q from the following diagram:


Four resistances of 2.0Ω each are joined end to end, to form a square ABCD. Calculate the equivalent resistance of the combination between any two adjacent comers.


Two lamps of resistance 30Ω and 20Ω respectively are connected in series in a 110V circuit. Calculate:
(i) the total resistance in the circuit
(ii) the current in the circuit, and
(iii) the voltage drop across each lamp.


Two resistors of 4Ω and 6Ω are connected in parallel to a cell to draw 0.5 A current from the cell. Calculate the current in each resistor.


Calculate the value of the resistance which must be connected to a 15 ohm resistance to provide on effective resistance of 6 ohm.


A metal wire of resistance 6 Ω is stretched so that its length is increased to twice its original length. Calculate its new resistance.


Two wires of same material and same lengths have radii in the ratio of 2 : 3, Compare their resistances.


Consider the following combinations of resistors:






  1. The combinations having equivalent resistance 1 Q is/are ______.

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