Home
Class 10
PHYSICS
Resistance and Resistivity...

Resistance and Resistivity

Text Solution

Verified by Experts

Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • ELECTRICITY

    KUMAR PRAKASHAN|Exercise ADDITIONAL QUESTION AND ANSWERS (Give scientific reasons for the following statements :)|4 Videos

  • ELECTRICITY

    KUMAR PRAKASHAN|Exercise ADDITIONAL QUESTION AND ANSWERS (additonal information :)|1 Videos

  • ELECTRICITY

    KUMAR PRAKASHAN|Exercise ADDITIONAL QUESTION AND ANSWERS (Solve the following examples:)|23 Videos

  • MAGNETIC EFFECTS OF ELECTRIC CURRENT

    KUMAR PRAKASHAN|Exercise VALUE BASED QUESTIONS WITH ANSWERS|15 Videos

Similar Questions

Explore conceptually related problems

Statement I : In the circuit in Fig. 7.46 , both cells are ideal and of fixed emf, the resistor R_(1) has fixed resistance and the resistance of resistor R_(2) can be varied ( but R_(2) is always non zero). Then the electric power delivered to the resistor of resistance R_(1) is independent of the value of resistance R_(2) . Statement II: If potential difference across a fixed resistance is unchanged , the poweer delivered to the resistor remains constant.

In an experiment to measure the internal resistance of a cell by a potentiometer, it is found that the balance point is at a length of 2 m when the cell is shunted by a 5 Omega resistance and is at a length of 3 m when the cell is shunted by a 10 Omega resistance, the internal resistance of the cell is then

Knowledge Check

  • A circle of 2.5 meter radius is made using a wire of uniform cross section and resistivity 1 m^(2) . If resistance of this wire is 10 pi Omega resistivity of the material of the wire is ........

    A
    `4 pi Omega` m
    B
    `(0.25)/(pi) Omega`m
    C
    `2 Omega` m
    D
    `1 Omega` m

  • Resistivity of metal …… and resistivity on semiconductor …… on temperature decreases

    A
    increases, decreases
    B
    decreases, increases
    C
    increases, increases
    D
    decreases, decreases

    • Similar Questions

    Explore conceptually related problems

    The values of voltage V and current I for a given diode are given in the following table. Find the forward bias resistance and reverse bias resistance for a given diode for a straight line characteristics.

    State the conductivity and resistivity of semiconductor.

    Identical resistance of resistance R are connected as in figure then find out net resistance between x and y.

    Define resistance or specific resistance and write a note on it.

    Thirteen resistances each of resistance R ohm are connected in the circuit as shown in the figure below. The effective resistance between A and B is

    Five equal resistances each of resistance R are connected as shown in the figure. A battery of V volts is connected between A and B . The current flowing in AFCEB will be

    Home
    Profile