English

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

Advertisements
Advertisements

Question

Name the material which is the best conductor of electricity.

Advertisements

Solution

Silver is the best conductor of electricity.

shaalaa.com
  Is there an error in this question or solution?
Chapter 1: Electricity - Exercise 4

APPEARS IN

Lakhmir Singh Physics (Science) [English] Class 10
Chapter 1 Electricity
Exercise 4 | Q 4

RELATED QUESTIONS

Find the expression for resistors connected in series.


A piece of wire of resistance R is cut into five equal parts. These parts are then connected in parallel. If the equivalent resistance of this combination is R’, then the ratio `"R"/"R'"` is ______.


How does the resistance of a wire change when:

 its diameter is tripled? 

 


V = IRTwo resistances X and Y are connected turn by turn : (i) in parallel, and (ii) series. In which case the resultant resistance will be less than either of the individual resistances?R = R1+ R2+ R3


Calculate the combined resistance in each case: 


If two resistors of 25 Ω and 15 Ω are joined together in series and then placed in parallel with a 40 Ω resistor, the effective resistance of the combination is : 

(a) 0.1 Ω
(b) 10 Ω
(c) 20 Ω
(d)40 Ω


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


You are supplied with a number of 100 Ω resistors. How could you combine some of these resistors to make a 250 Ω resistor?


A graph is plotted taking p.d. along y-axis and electric current along x-axis. Name the physical quantity that represents the slope of this graph (Fig.).


How will you oonnect five resistors, each of the value one ohm, to obtain an equivalent resistance of 0.2 `Omega`


Two bulbs of 100 W and 40 W are connected in series. The current through the 100 W bulb is 1 A. The current through the 40 W bulb will be ______.


A given metallic wire of resistance R is doubled on itself. What will be its new resistance?


How does the resistivity of an alloy such as constantace depends on temperature.


In the circuit shown below, calculate the equivalent resistance between the points (i) A and B, (ii) C and D.


What is the equivalent resistance between the points X and Y for the given network?


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 quantity of heat that will be produced in a coil of resistance 75 Ω if a current of 2A is passed through it for 2 minutes.


What is the maximum resistance which can be made using five resistors each of `1/5` W?


If the current I through a resistor is increased by 100% (assume that temperature remains unchanged), the increase in power dissipated will be:


Two electric bulbs have resistances in the ratio 1 : 2. If they are joined in series, the energy consumed in them is in the ratio:


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×