मराठी

Define one ohm. - Science

Advertisements
Advertisements

प्रश्न

Define one ohm.

Define the following:

One ohm

व्याख्या
Advertisements

उत्तर

One ohm is the resistance of a component when the potential difference of one volt applied across the component drives a current of one ampere through it.

shaalaa.com
  या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
पाठ 4: Current Electricity - Exercise 4.1 i [पृष्ठ १७३]

APPEARS IN

फ्रँक Physics - Part 2 [English] Class 10 ICSE
पाठ 4 Current Electricity
Exercise 4.1 i | Q 10 | पृष्ठ १७३

व्हिडिओ ट्यूटोरियलVIEW ALL [1]

संबंधित प्रश्‍न

Find the resistance of a conductor if 0.24 A current is passing through it and a potential difference of 24 V is applied across it.


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.


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


Find the expression for the resistivity of a material and state the SI unit of resistivity.


The unit of electrical resistance is:

(a) ampere
(b) volt
(c) coulomb
(d) ohm


Keeping the p.d. constant, the resistance of a circuit is halved. The current will become:

(a) one-fourth
(b) four time
(c) half
(d) double


In the circuit shown in the figure, find the total resistance of the circuit and the current in the arm AD.


A wire has a length of 2.0 m and a resistance of 5.0 Ω. Find the electric field existing inside the wire if it carries a current of 10 A.


How does an increase in the temperature affect the specific resistance of a : 
(i) Metal and
(ii) Semiconductor ?


State Ohm's law. What are its limitations?

What are non-ohmic conductors? Give one exmaple. Draw a current-voltage graph for a non-ohmic conductor.


State microscopic form of Ohm’s law.


State macroscopic form of Ohm’s law.


The unit of specific resistance is ____________.


The variable resistance is called ____________.


Assertion: The statement of Ohm’s law is K = IR.

Reason: V = IR is the equation which defines resistance.


A heater of 220 V heats a volume of water m 5 mint time. A heater of 110 V heat in ten second. The resistance of the conductor is


State Ohm's Law. Represent it mathematically.


What is meant by resistance of a conductor ? Define its SI unit.


A current of 3.2 mA flows through a conductor. If charge on an electron is −1.6 × 10-19 coulomb, find the number of electrons that will pass each second through the cross section of that conductor.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×