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Two metallic s pheres of radii R(1) and ...

Two metallic s pheres of radii `R_(1)` and `R_(2)` are connected b y a thin wire. If `+q_(1)~ and `+q_(2)` are the charges on the two s pheres then

A

q1/q2 = R1^2/ R2^2

B

q1/q2 = R1/ R2

C

q1/q2 = R1^3/ R2^3

D

q1/q2 =( R1^2 -R2^2/ R1^2+ R2^2)

Text Solution

Verified by Experts

The correct Answer is:
C
`v_(cm) = (m(2v) + m(-v))/(m + m) = (v)/(2)`
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ALLEN -CURRENT ELECTRICITY-EXERCISE-V A
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  2. When the power delivered by a 100 volt battery is 40 watts the equival...

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  3. Two batteries, one of emf 18V and internal resistance 2Omega and the o...

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  4. When a wire of uniform cross-section a, length l and resistance R is ...

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  5. For the network shown in the figure the value of the current i is

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  6. In a potentiometer experiment it is found that no current passes throu...

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  7. A potentiometer wire has resistance 40Omega and its length is 10m. It ...

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  8. A 2^(@)C rise in temperature is observed in a conductor passing a curr...

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  9. If a uniform wire of resistance R is uniformly strethced to n times th...

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  10. In the circuit shown if a conducting wire is connected between points ...

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  11. The emfs and resistance in the circuit (as shown in the figure) have t...

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  12. Electric field inside a copper wire of length 10 meter, resistance 2 o...

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  13. The resistance of an ammeter is 13 Omega and its scale is graduated fo...

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  14. The current density varies radical distance r as J=ar^(2), in a cylind...

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  15. Four wires of the same diameter are connected, in turn, between two po...

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  16. Five resistance, each of 5Omega are connected as shown in figure. Find...

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  17. In the circuit shown, the current through the 4 Omega resistors is 1 a...

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  18. A galvanometer of resistance 50Omega is connected to a b attery of 3V ...

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