Home
Class 12
PHYSICS
A cell has an emf of 3V and an internal ...

A cell has an emf of 3V and an internal resistance r. The circuit current is 0.75A when it is connected to an external resistance of `1 Omega`. IF the poles are connected directly what will be the current (in A)?

Text Solution

Verified by Experts

The correct Answer is:
1
Promotional Banner

Topper's Solved these Questions

  • CURRENT ELECTRICITY

    CHHAYA PUBLICATION|Exercise EXAMINATION ARCHIVE WITH SOLUTIONS(WBCHSE)|18 Videos

  • CURRENT ELECTRICITY

    CHHAYA PUBLICATION|Exercise EXAMINATION ARCHIVE WITH SOLUTIONS(WBJEE)|8 Videos

  • CURRENT ELECTRICITY

    CHHAYA PUBLICATION|Exercise ENTRANCE CORNER(COMPREHENSION TYPE)|8 Videos

  • COMMUNICATION STSTEM

    CHHAYA PUBLICATION|Exercise CBSE SCANNER|28 Videos

  • DIFFRACTION AND POLARISATION OF LIGHT

    CHHAYA PUBLICATION|Exercise CBSE SCANNER|27 Videos

Similar Questions

Explore conceptually related problems

Two electric cells each of emf 1.5 V and internal resistance 2 Omega are connected in parallel and this combiantion of cells is connected with an external distance of 2 Omega . What will be the current in the external circuit?

5 electric cells are connected in series .Emf of each cell is 1.5 V and internal resistance is 0.1 Omega .When this combination of cells is connected with an external circuit of resistance 4 Omega, what will be the current through that resistance? What resistance should be connected instead of 4 Omega so that the current will be halved?

Four cells, each of emf E and internal resistance r , are connected in series across an external resistance R By mistake one of the cells is connected in reverse. Then the current in the external circuit is

A cell of emf 3.4V and internal resistance 3Omega is connected to an ammeter having resistance 2Omega . and to an external resistance of 100Omega . When a voltmeter is connected across the 100Omega resistance the ammeter reading is 0.04A. Find the voltage read by the voltmeter and its resistance. Had the voltmeter been an ideal one what would have been its reading ?

Two cells one of emf 1.4 V and internal resistance 0.6 Omega the other of emf 2.5. V and internal resistance 0.3 Omega are connected in parallel and the combination is connected in series with an external resistance of 4 Omega . What is the current through this resistance?

Four cells each of emf E are internal resistance r, are connected In series across an external resistance R. By mistake one of the cells is connected in reverse. Then the current in the external circuit is

A battery of emf E and internal resistance 'r' is connected to an external resistance 'R', the condition for maximum power transfer is

An electric kettle has a resistance of 160 Omega . What current will flow when it is connected to a 240 V supply?