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Electric Circuits

Electric Circuits
A wire of resistance R has it length and cross - section both doubled. Its resistance will become

 R.
 2R.
 4R.
 0.5R.

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Electric Circuits
A 35 V source is connected to a series circuit of 600 Ω and R as shown. If a voltmeter of internal resistance 1.2 kΩ is connected across 600 Ω resistor, it reads 5 V. The value of R is

 2.4 k Ω.
 7.2 k Ω.
 3.6 k Ω.
 1.2 k Ω.

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Electric Circuits
The equation for 25 cycles current sine wave having rms value of 30 amps, will be

 30sin50πt.
 42.4sin50πt.
 42.4sin25πt.
 30sin25πt.

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Electric Circuits
In RLC series circuit R = 2Ω, L = 2mH and C = 1μF and applied voltage is 10V DC. Then what is steady state current value?

 5A
 1A
 2A
 0A

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Electric Circuits
The electrical resistance of human body is around

  5 ohms.
  25 ohms.
  250 ohms.
  1000 ohms.

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Electric Circuits
To reduce hysteresis loss, we use

 CRGO steel.
 soft-iron.
 copper bars.
 laminated sheets.

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MORE MCQ ON Electric Circuits

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