SATHEE: Current Electricity 5 Question 2

Current Electricity 5 Question 2

2. The Wheatstone bridge shown in figure here, gets balanced when the carbon resistor is used as $R_{1}$ has the color code (orange, red, brown). The resistors $R_{2}$ and $R_{4}$ are $80 Ω$ and 40 $Ω$ , respectively.

Assuming that the color code for the carbon resistors gives their accurate values, the color code for the carbon resistor is used as $R_{3}$ would be

(2019 Main, 10 Jan II)

(a) brown, blue, black

(b) brown, blue, brown

(d) red, green, brown

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Solution:

The value of $R_{1}$ (orange, red, brown)

$\Rightarrow = 32 \times 10 = 320 Ω$

Given, $R_{2} = 80 Ω$ and $R_{4} = 40 Ω$

In balanced Wheatstone bridge condition,

$\begin{aligned} \frac{R_{1}}{R_{2}} = \frac{R_{3}}{R_{4}} \Rightarrow R_{3} = R_{4} \times \frac{R_{1}}{R_{2}} \\ \Rightarrow & R_{3} = \frac{40 \times 320}{80} \\ or & R_{3} = 160 Ω = 16 \times 10^{1} \end{aligned}$

Comparing the value of $R_{3}$ with the colours assigned for the carbon resistor, we get

$\begin{aligned} R_{3} = 16 \times 10^{1} \\ ↗↑↑↑ ↑_{Brown Blue Brown} \end{aligned}$

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Current Electricity 5 Question 2

2. The Wheatstone bridge shown in figure here, gets balanced when the carbon resistor is used as $R_{1}$ has the color code (orange, red, brown). The resistors $R_{2}$ and $R_{4}$ are $80 Ω$ and 40 $Ω$ , respectively.

Solution:

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चिकित्सा तैयारी

एनसीईआरटी पुस्तकें और समाधान

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परीक्षा मंच

नमूना मॉक टेस्ट

सदस्यता

एनसीईआरटी व्यायाम वीडियो समाधान

Current Electricity 5 Question 2

2. The Wheatstone bridge shown in figure here, gets balanced when the carbon resistor is used as R1 has the color code (orange, red, brown). The resistors R2 and R4 are 80Ω and 40 Ω, respectively.

Solution:

इंजीनियरिंग की तैयारी

चिकित्सा तैयारी

एनसीईआरटी पुस्तकें और समाधान

महत्वपूर्ण संसाधन

अन्य संसाधन

पाठ्यक्रम

परीक्षा मंच

नमूना मॉक टेस्ट

सदस्यता

एनसीईआरटी व्यायाम वीडियो समाधान

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2. The Wheatstone bridge shown in figure here, gets balanced when the carbon resistor is used as $R_{1}$ has the color code (orange, red, brown). The resistors $R_{2}$ and $R_{4}$ are $80 Ω$ and 40 $Ω$ , respectively.