Home
Class 10
PHYSICS
A cell is sending current in an external...

A cell is sending current in an external circuit. How does the terminal voltage compare with the e.m.f. of the cell ?

Text Solution

Verified by Experts

terminal voltage `lt` e.m.f.,
Promotional Banner

Topper's Solved these Questions

  • CURRENT ELECTRICITY

    ICSE|Exercise EXERCISE-8(B) (MULTIPLE CHOICE TYPE)|3 Videos

  • CURRENT ELECTRICITY

    ICSE|Exercise EXERCISE-8(B) (NUMERICALS )|54 Videos

  • CURRENT ELECTRICITY

    ICSE|Exercise EXERCISE-8(A)(NUMERICALS )|16 Videos

  • CALORIMETRY

    ICSE|Exercise EXERCISE-11(B) (NUMERICALS)|15 Videos

  • ELECTRO-MAGNETISM

    ICSE|Exercise EXERCISE-10 (C) NUMERICALS |1 Videos

Similar Questions

Explore conceptually related problems

The diagram in Fig. shows a cell of e.m.f. epsi = 2 volt and internal resistance r = 1 ohm connected to an external resistance R = 4 ohm. The ammeter A measures the current in the circuit and the voltmeter V measures the terminal voltage across the cell. What will be the readings of the ammeter and voltmeter when the key K is closed.

The diagram in Fig. shows a cell of e.m.f. epsi = 2 volt and internal resistance r = 1 ohm connected to an external resistance R = 4 ohm. The ammeter A measures the current in the circuit and the voltmeter V measures the terminal voltage across the cell. What will be the readings of the ammeter and voltmeter when the key K is open

36 cells each of internal resistance 0.5 Omega and emf 1.5 V each are used to send current through an external circuit of 2 Omega resistance. Find the best mode of grouping them and the current through the external circuit.

What is the relationship between potential difference across the terminals of a cell and emf of the cell ?

A battery is made by joining m rows of identical cells in parallel. Each row consists of n cells joined in series. This battery sends a maximum current I in a given external resistor. Now the cells are so areaged that instead of m rows. N rows are joind in parallel and each row consists of m cells joined in series. Find the current through the same external resistor (Total number of cells which is equal to nm is connected )

When a resistance of 2 ohm is connected across terminals of a cell, the current is 0.5 A . When the resistance is increased to 5 ohm, the current is 0.25 A The e.m.f. of the cell is

Two identical cells of emf 1.5 V each joined in paralllel provide supply to an external circuit consisting of two resistances of 7 Omega each joined in parallel. A very high resistance voltmeter reads the terminal voltage of cells to be 1.4 V. Calculate the internal resistance of each cell.

In the circuit shown , the current draw by the cell is

In a mixed grouping of identical cells, five rows are connected in parallel and each row contains 10 cells. This combination sends a current I through an external resistance of 20Omega. if the emf and internal resistance of each cell is 1.5 V and 1 Omega, respectively then find the value of I.

Explain the meaning of the terms e.m.f., terminal voltage, and internal resistance of a cell.