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In the diagram given below in Fig. A, B ...

In the diagram given below in Fig. A, B and C are three ammeters each of negligible resistance. The ammeter B reads 0-5 A. Calculate:
the e.m.f. of the cell.

Text Solution

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E.m.f. of cell = total current drawn `xx` total resistance of circuit
`= 1.5 xx 4 = 6 V`
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ICSE-CURRENT ELECTRICITY-EXERCISE-8(C) NUMERICALS
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  2. An electric bulb of resistance 500 ohm draws current 0.4 A from the so...

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  3. An electric bulb of resistance 500Omega, draws a current of 0.4 A. Cal...

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  4. A current of 2 A is passed through a coil of resistance 75 ohm for 2 m...

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  5. A current of 2 A is passed through a coil of resistance 75 ohm for 2 m...

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  6. Calculate the current through a 60 W lamp rated for 250 V. If the line...

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  7. An electric bulb is rated '100 W, 250 V'. How much current will the bu...

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  8. An electric bulb is rated "220 V, 100 W'. What is its resistance ?

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  9. An electric bulb is rated "220 V, 100 W'. What safe current can be ...

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  10. A bulb of power 40 W is used for 12.5 h each day for 30 days. Calculat...

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  11. An electric press is rated 750 W, 230 V'. Calculate the electrical ene...

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  12. An electrical appliance having a resistance of 200 Omega is operated ...

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  13. An electrical appliance having a resistance of 200 Omega is operated ...

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  14. A bulb rated 12 V, 24 W operates on a 12 volt battery for 20 minutes. ...

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  15. A bulb rated 12 V, 24 W operates on a 12 volt battery for 20 minutes. ...

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  16. A current of 0.2 A flows through a wire whose ends are at a potential ...

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  17. A current of 0.2 A flows through a wire whose ends are at a potential ...

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  18. What is the resistance, under normal working conditions, of an electri...

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  19. Two bulbs are rated 60 W, 220 V' and '60 W, 110 V respectively. Calcul...

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  20. An electric bulb is rated 250 W, 230 V'. Calculate: the energy con...

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  21. An electric bulb is rated 250 W, 230 V'. Calculate: the time in wh...

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