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The diagram in Fig. shows a cell of e.m....

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

Text Solution

Verified by Experts

ammeter reading = 0, voltmeter reading = 2 volt
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ICSE-CURRENT ELECTRICITY-EXERCISE-8(B) (NUMERICALS )
  1. The diagram in Fig. shows a cell of e.m.f. epsi = 2 volt and internal ...

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  2. The diagram in Fig. shows a cell of e.m.f. epsi = 2 volt and internal ...

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  3. A battery of e.m.f 3 V supplies current through a circuit in which the...

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  4. A cell of e.m.f. 1.8 V and internal resistance 2 Omega is connected i...

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  5. A cell of e.m.f. 1.8 V and internal resistance 2 Omega is connected i...

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  6. The music system draws a current of 400 mA when connected to a 12 V ba...

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  7. The music system draws a current of 400 mA when connected to a 12 V ba...

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  8. A cell of e.m.f. ε and internal resistance r sends a current of 1.0 A ...

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  9. Two resistors having resistance 4 Omega and 6 Omega are connected in...

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  10. Four resistors each of resistance 2 Omega are connected in parallel. ...

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  11. You have three resistors of values 2 Omega , 3 Omega and 5 Omega . H...

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  12. Three resistors each of 2 Omega are connected together so that their ...

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  13. Calculate the equivalent resistance between the points A and B in Fig....

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  14. A combination consists of three resistors in series. Four similar sets...

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  15. In the circuit shown below in Fig., calculate the value of x if the eq...

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  16. Calculate the effective resistance between the points A and B in the c...

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  17. A uniform wire with a resistance of 27 Omega is divided into three eq...

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  18. A circuit consists of a resistor of 1 ohm in series with a parallel ar...

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  19. Calculate the effective resistance between the points A and B in the n...

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  20. Calculate the equivalent resistance between the points A and B in Fig.

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