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

When a 4 Ω resistor is connected across the terminals of a 12 V battery, the number of coulombs passing through the resistor per second is:

(a) 0.3
(b) 3
(c) 4
(d) 12


A p.d. of 4 V is applied to two resistors of 6 Ω and 2 Ω connected in series. Calculate:

(a) the combined resistance
(b) the current flowing
(c) the p.d. across the 6 Ω resistor


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.

Does an ammeter have a low or high resistance?

Does a voltmeter have a low or high resistance?

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


You have three resistors of values 2 `Omega`, 3 `Omega`, and 5 `Omega`. How will you join them so that the total resistance is less than 2 `Omega`?


Three resistors of 6.0 Ω, 2.0 Ω and 4.0 Ω are joined to an ammeter A and a cell of emf 6.0 V as shown in the following figure. Calculate :

  1. the effective resistance of the circuit.
  2. the reading of ammeter.


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


When do you say that the resistors are connected in this way? Draw a circuit diagram.


Answer the following question.
While studying the dependence of potential difference ( V) across a resistor on the current (I) passing through it, in order to determine the resistance of the resistor, a student took 5 readings for different values of current and plotted a graph between V and t. He got a straight line graph passing through the origin. What does the straight-line signify? Write the method of determining the resistance of the resister using this graph. 


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


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


State a relation between electrical power, resistance and potential difference in an electrical circuit.


State and explain the laws of resistance.


The resistance of two resistors joined in series is 8Ω and in parallel is 1.5Ω. Find the value of the two resistances.


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×