Two metallic spheres of radii 1 cm and 3 cm are given charges of − 1 × 1 0 − 2 C and 5 × 1 0 − 2 C , respectively. If these are connected by a conducting wire, the final charge on the bigger sphere isNEET 2012 (Mains)

Charge flows from high potential to low potential 3 K Q 1 Q 1 = 1 K Q 2 = 3 Q 2 Also Q 1 + Q 2 4 Q 2 = 4 × 1 0 − 2 = 4 × 1 0 − 2 Q 2 = 1 0 − 2 and Q 1 = 3 × 1 0 − 2 C

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PhysicsElectrostaticsPotential & potential energyMedium2 minPYQ_2012

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Two metallic spheres of radii $1 cm$ and $3 cm$ are given charges of $- 1 \times 1 0^{- 2} C$ and $5 \times 1 0^{- 2} C$ , respectively. If these are connected by a conducting wire, the final charge on the bigger sphere isNEET 2012 (Mains)

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Solution:

Charge flows from high potential to low potential $\frac{K Q _{1}}{3} Q_{1} = \frac{K Q _{2}}{1} = 3 Q_{2}$ Also $Q_{1} + Q_{2} 4 Q_{2} = 4 \times 1 0^{- 2} = 4 \times 1 0^{- 2}$ $Q_{2} = 1 0^{- 2}$ and $Q_{1} = 3 \times 1 0^{- 2} C$

Stream:NEETSubject:PhysicsTopic:ElectrostaticsSubtopic:Potential & potential energy

⏱ 2mℹ️ Source: PYQ_2012

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