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Calculate magnitude of resistance X in t...

Calculate magnitude of resistance X in the circuit shown in figure

when no current flows through the `5Omega` resistor?

Text Solution

Verified by Experts

Since wheatstone bridge is balanced
so ` " "(x)/( 18) =(2)/( 6) or x =( 18 xx 2)/( 6) =6Omega`
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MOTION-Electrical Instrument -EXERCISE -3
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  2. The resistance of an ammeter is 13 Omega and its scale is graduated fo...

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  3. A galvanometer of resistance 50 Omega is connected to a battery of 3 ...

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  4. A galvanometer having a coil resistance of 60 Omega shows full scale...

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  5. The resistance in the two arms of the meter bridge are 5 Omega and R O...

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  6. A potentiometer circuit has been setup for finding. The internal resis...

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  7. In a ammeter 0.2% of main current passes through the galvanometer. If ...

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  8. If an ammeter is to be used in place of a voltmeter, then we must conn...

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  9. The length of a wire of a potentiometer is 100 cm, and the e.m.f. of i...

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  10. An ammeter reads upto 1 ampere. Its internal resistance is 0.81 ohm. T...

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  11. In a meter bridge experiment null point is obtained at 20 cm. from one...

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  12. In a potentiometer experiment the balancing with a cell is at length 2...

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  13. In a Wheatstone's bridge, three resistances P,Q and R connected in the...

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  14. Shown in the figure below is a meter- bridge set up will null deflecti...

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  15. The current in the primary circuit of a potentiometer is 0.2 A. The sp...

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  16. On interchanging the resistances, the balance point of a meter bridge ...

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  17. In a potentiometer experiment it is found that no current passes throu...

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