Home
Class 12
PHYSICS
The car-battery is of 12 volt. 8 simple ...

The car-battery is of 12 volt. 8 simple cells connected in series can give 12 volt. But such cells are not used in starting a car , why ?

Text Solution

Verified by Experts

To start a car, high current is required which cannot be obtained from the series combination of 8 simple cells, because their internal resistance is of the order of `10 Omega`, while the resistance of the car battery is only of the order of `0.1 Omega`.
Promotional Banner

Topper's Solved these Questions

  • CURRENT ELECTRICITY

    PRADEEP|Exercise Conceptual Problems|3 Videos

  • CURRENT ELECTRICITY

    PRADEEP|Exercise Very short Q/A|7 Videos

  • COMMUNICATION SYSTEMS

    PRADEEP|Exercise MODEL TEST PAPER-2|9 Videos

  • DUAL NATURE OF RADIATION AND MATTER

    PRADEEP|Exercise Exercise|191 Videos

Similar Questions

Explore conceptually related problems

A coil and a bulb are connected in series with a 12 volt direct current source. A soft iron core is now inserted in the coil. Then

To the potentiometer wire of L and 10Omega resistance, a battery of emf 2.5 volts and a resistance R are connected in series. If a potential difference of 1 volt is balanced across L/2 length, the value of R is Omega will be

The barrier potential in a p-n junction diode is 0.3 volts . The current required is 6 mA. If a resistance of 200 Omega is connected in series with the junction diode then the e.m.f. of the cell required for use in the circuit is

A voltmeter coil has resistance 50.0(Omega) and a resistor of 1.15k(Omega) is connected in series.It can read potential differences upto 12 volts.If this same coil is used to construct an ammeter which can measure currents up to 2.0A ,What should be the resistance of the shunt used ?

[" 28.To get maximum current in a resistance of "3" ohm,one can use n rows of "m" ."],[" cells (connected in series) connected in parallel.If the total number of cells is "],[24" and the internal resistance of a cell is "0.5" ohm,then "],[[" 1) "m=12,n=2," 2) "n=3,m=8," 3) "m=2,n=12," 4) "m=6,n=4]]

A secondary cell after long use has an emf of 1.9 V and a large internal resistance of 380 Omega . What maximum current can be drawn from the cell ? Could the cell drive the starting motor of a car ?