Physics - Current Electricity Question with Solution | TestHub

PhysicsCurrent ElectricityEquivalent ResistanceMedium2 minPYQ_2018

PhysicsMediumsingle choice

In the circuit shown the cells $A$ and $B$ have negligibleresistances. For $V_{A} = 12 V, R_{1} = 500Ω$ and $R = 100Ω$ the galvanometer $(G)$ shows no deflection. The value of $V_{B}$ is :

Options:

Answer:

Solution:

Since deflection in galvanometer is zero so current will flow as shown in the above diagram. current, $I = \frac{V _{A}}{R _{1} + R} = \frac{12}{500 + 100} = \frac{12}{600}$ So $V_{B} = I R = \frac{12}{600} \times 100 = 2 V$

Stream:VITEEESubject:PhysicsTopic:Current ElectricitySubtopic:Equivalent Resistance

⏱ 2mℹ️ Source: PYQ_2018

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