Leadership

Physics

Ten Standard

Test your understanding of this lesson Combination of resistance:-

1)
The electrical devices are connected individually in household circuit with
  • series combination
  • parallel combination
  • both (a) & (b)
  • none of these
2)
In a parallel circuit the equivalent resistance is
  • > the least resistance
  • > the maximum resistance
  • < the least resistance
  • < the maximum resistance
3)
In a series combination the equivalent resistance is
  • > the least resistance
  • > the maximum resistance
  • < the least resistance
  • < the maximum resistance
4)
If \(r_1,r_2 \) & \(r_3\) ohm resistances are connected in parallel combination and equivalent resistance is
  • \(R=r_1+r_2+r_3 \)
  • \(R=\frac{1}{r_1}+\frac{1}{r_2}+\frac{1}{r_3} \)
  • \(\frac{1}{R}=\frac{1}{r_1}+\frac{1}{r_2}+\frac{1}{r_3} \)
  • \(\frac{1}{R}=r_1+r_2+r_3 \)
5)
If 4 resistance having resistance \(1\Omega,2\Omega,3\Omega,4\Omega\) are connected in series combination the equivalent resistance will be
  • \(\frac{12}{25}\Omega\)
  • \(\frac{25}{12}\Omega\)
  • \(1\Omega\)
  • \(24\Omega\)
Hand draw

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