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Electric Circuits

Electric Circuits
A 100 ohm resistor is directly connected across a 80 V battery. What is the power dissipation?

 10 W.
  64 W.
 5 W.
 1 W.

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Electric Circuits
Three element having conductance G1, G2 and G3 are connected in parallel. Their combined conductance will be

 G1 + G2 + G3.
 1 / G1 + 1 / G2 + 1 / G3.
 (1 / G1 + 1 / G2 + 1 / G3) - 1.
 (G1 + G2 + G3) - 1.

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Electric Circuits
In the figure given, the value of R is

 24 Ω.
 18 Ω.
 12 Ω.
 10 Ω.

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Electric Circuits
Which quantity consists of a unit 1KWh ?

 Time
 Charge
 Power
 Energy

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Electric Circuits
Absolute permittivity of dielectric medium is represented as

 ε0
 εr
 εr/ε0
 εrε0

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Electric Circuits
A piece of copper and another piece of germanium are cooled from room temperature to 80K. The resistance of

 copper decreases and germanium increases.
 copper increases and germanium decreases.
 each of them decreases.
 each of them increases.

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