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Physics - Current Electricity Question with Solution | TestHub

PhysicsCurrent ElectricityElectrical instrumentEasy2 minPYQ_2020

PhysicsEasysingle choice

If the balance length corresponding to points $B$ and $C$ is $40 c m$ on the potentiometer wire, the balance length corresponding to points $C$ and $D$ is

Options:

Answer:

Solution:

According to the question

$V_{B} - V_{C} = I \times 5 = ϕ \times 40$ ....(1)

$∴ V_{C} - V_{D} = I \times 4 = ϕ \times l$ ....(2)

from (1) and (2)

⇒ $\frac{5}{4} = \frac{40}{l} ∴ l = \frac{40 \times 4}{5} = 32 c m$

Stream:NTA_ABHYAS_NEETSubject:PhysicsTopic:Current ElectricitySubtopic:Electrical instrument

⏱ 2mℹ️ Source: PYQ_2020

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