In this given figure if the balancing lengths for resistance of 1-2-4- in the resistance box R-B are l1-l2 and l3 respectively then l1-l2-l3 will be -

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Standard X

Physics

Factors Affecting Resistance & How They Affect

In this given...

Question

In this given figure if the balancing lengths for resistance of $1 Ω, 2 Ω, 4 Ω$ in the resistance box $(R . B)$ are $l_{1}, l_{2}$ and $l_{3}$ respectively then $l_{1} : l_{2} : l_{3}$ will be :

1 : 1 : 1

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1 : 2 : 4

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4 : 2 : 1

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1 : 1 : 2

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Solution

The correct option is B $1 : 2 : 4$

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Similar questions

Q. Let

l_{1}, l_{2}, l_{3}

be the lengths of the internal bisectors of angles

A, B, C

respectively of a

Δ A B C .

Statement-1;

\frac{cos \frac{A}{2}}{l_{1}} + \frac{cos \frac{B}{2}}{l_{2}} + \frac{cos \frac{C}{2}}{l_{3}} = 2 (\frac{1}{a} + \frac{1}{b} + \frac{1}{c})

Statement-2:

l_{1}^{2} = b c [1 - {(\frac{a}{b + c})}^{2}]; l_{2}^{2} = c a [1 - {(\frac{b}{c + a})}^{2}]; l_{3}^{2} = a b [1 - {(\frac{c}{a + b})}^{2}]

Q. Consider the following statements relating to

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1.

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L_{1}

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If the acute angle between

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is equal to the acute angle between

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then

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In this given figure if the balancing lengths for resistance of 1Ω,2Ω,4Ω in the resistance box (R.B) are l1,l2 and l3 respectively then l1:l2:l3 will be :

The correct option is B 1:2:4

In this given figure if the balancing lengths for resistance of $1 Ω, 2 Ω, 4 Ω$ in the resistance box $(R . B)$ are $l_{1}, l_{2}$ and $l_{3}$ respectively then $l_{1} : l_{2} : l_{3}$ will be :

The correct option is B $1 : 2 : 4$