Home
Class 10
PHYSICS
A wire of resistance 4Omega is connected...

A wire of resistance `4Omega` is connected to a battery having an internal resistance of `1Omega` For a current of 6 A to flow through the circuit what should be the emf of the battery ?

Text Solution

Verified by Experts

`I=(E)/(R+r)`
`E=I(R+r)`
`=6A(4Omega+1Omega)`
`=6Axx5Omega`
`E=30V`
Promotional Banner

Topper's Solved these Questions

  • SOURCES OF ELECTRIC CURRENT

    CENGAGE PHYSICS|Exercise CHALLENGING EXERCISE |10 Videos
  • SOURCES OF ELECTRIC CURRENT

    CENGAGE PHYSICS|Exercise OLYMPIAD AND NTSE LEVEL EXERCISES|10 Videos
  • SOURCES OF ELECTRIC CURRENT

    CENGAGE PHYSICS|Exercise MANDATORY EXERCISE (Exercise Set III)|1 Videos
  • REFRACTION OF LIGHT

    CENGAGE PHYSICS|Exercise OLYMPIAD AND NSE LEVEL EXCERCISES |10 Videos
  • STATIC ELECTRICITY

    CENGAGE PHYSICS|Exercise OLYMPIAD AND NTSE LEVEL EXERCISES|10 Videos

Similar Questions

Explore conceptually related problems

A resistance of 1 Omega is connected to a battery of emf 2 V and internal resistance 0.4 Omega what current is flowing through the circuit ? If another battery of double the emf is connected in series with the earlier one then current flowing in the circuit becomes double . what should be the internal resistance of battery ?

A series combination of two resistors 1 Omega each is connected to a 12 V battery of internal resistance 0.4 Omega . The current flowing through it will be

A wire of length 1.6m has a resistance 8 Omega is connected to a battery of 2 volts and internal resistance 2Omega . What is the potential gradient ?

A battery has e.m.f. 4 V and internal resistance r . When this battery is connected to an external resistance of 2 ohms , a current of 1 amp . flows in the circuit. How much current will flow if the terminals of the battery are connected directly

A voltmeter of range of 10 V and resistance 5000 Omega is connected in series with a battery and a resistor of 500Omega by mistake. If the voltmeter reading is 8V, what is the emf of the battery? (Neglect internal resistance of battery).

A battery of unknown emf and internal resistance is given to a student for the experiment. When student connects the battery to an external resistance of 10 Omega then 1A current flows through the circuit and when the same is connected to 15 Omega resistance then 0.75 A current flows through the circuit . Calculate the emf and internal resistance of the given battery.

The wire of potentiometer has resistance 4 Omega and length 1m. It is connected to a cell of e.m.f. 2V and internal resistance 1 Omega . The current flowing through the potentiometer wire is

In a meter bridge circuit, the two resistances in the gap are 5 Omega and 10 Omega . The wire resistance is 4 Omega . The emf of the cell connected at the ends of the wire is 5 V and its internal resistance is 1 Omega . What current will flow through the galvenometer of resistance 30 Omega if the contact is made at the midpoint of wire ?

The emf of a battery is 6 V and its internal resistance is 0.6 Omega . A wire of resistance 2.4 Omega is connected to the two ends of the battery, calculate (a) current in the circuit and (b) the potential difference between the two terminals of the battery in closed circuit.