English

Name the Law Which is Illustrated by the Above V−I Graph.

Advertisements
Advertisements

Question

 Name the law which is illustrated by the above VI graph.

Advertisements

Solution

 Ohm's law is illustrated by the above V−I graph.

shaalaa.com
  Is there an error in this question or solution?
Chapter 1: Electricity - Exercise 3

APPEARS IN

Lakhmir Singh Physics [English] Class 10
Chapter 1 Electricity
Exercise 3 | Q 20.3

Video TutorialsVIEW ALL [1]

RELATED QUESTIONS

Graph showing the variation of current versus voltage for a material Ga As is shown in the figure. Identify the region of
(i) negative resistance

(ii) where Ohm's law is obeyed.


Why are coils of electric toasters and electric irons made of an alloy rather than a pure metal?


A low voltage supply from which one needs high currents must have very low internal resistance. Why?


Write the formula of resistivity


Fill in the following blank with suitable words: 

Resistance is measured in .............. The resistance of a wire increases as the length ..............; as the temperature ..............; and as the cross-sectional area .............. .


  1. Draw a V-I graph for a conductor obeying Ohm’s law.
  2. What does the slope of V–I graph  for a conductor represent?

Which of the following is an ohmic resistance?


A wire of resistance 3 ohm and length 10 cm is stretched to length 30 cm. Assuming that it has a uniform cross section, what will be its new resistance?


Two metallic spheres A and B kept on insulating stands are in contact with each other. A positively charged  rod P is brought near the sphere A as shown in the figure. The two spheres are separated from each other,  and the rod P is removed. What will be the nature of charges on spheres A and B?


Tick(✓) the correct choice in the following:

Ohm's law is applicable to


State Ohm's law. What are its limitations?

State Ohm’s law.


Explain the equivalent resistance of a parallel resistor network.


Two cells of same emf E but internal resistance r1 and r2 are connected in series to an external resistor R (Figure). What should be the value of R so that the potential difference across the terminals of the first cell becomes zero.


You are provided with a resistor, a key, an ammeter, a voltmeter, four cells of 1.5 V each and few connecting wires. Using circuit components, draw a labelled circuit diagram to show the setup to study Ohm's law.

State the relationship between potential difference (V) across the resistor and the current (I) flowing through it. Also draw V-I graph, taking V on the X-axis.


Let the resistance of an electrical device remain constant, while the potential difference across its two ends decreases to one fourth of its initial value. What change will occur in the current through it? State the law which helps us in solving the above stated question. 


Why should an ammeter have low resistance?


A current of 0.8 A flows in a conductor of 40 Ω for 1 minute. The heat produced in the conductor will be ______.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×