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In a meter bridge the balance point is f...

In a meter bridge the balance point is found to the be at 40 cm from one end when the resistor at the end is `15Omega` , Find the resistance at the other side .

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If `rho` be the resistance per 1 cm length of the metre wire , then in the present case ,
`P=40rhoOmega,Q=(100-40)rho=60rhoOmega,R=15Omega ,s= ? `
In balance condtion , `(P)/(Q)xx(R)/(S)`
`" or, " S=R(Q)/(P)=15xx(60rho)/(40rho)=22.5Omega`
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CHHAYA PUBLICATION-KIRCHHOFF'S LAWS AND ELECTRICAL MEASUREMENT -CBSE SCANNER
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  2. Calculate the value of the resistance of R in the circuit shown in the...

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  6. Why are the connections between the resistance in a metre bridge made ...

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  8. Which material is used for the metre bridge wire and why ?

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  12. Write the principle of working of a metre bridge .

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  14. State the two Kirchhoff's laws . Explain briefly how these rules are j...

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