Current Electricity: Resistance, Conductance, and Ohm's Law
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Questions and Answers

What is the unit of Specific Conductance?

  • $ohm^{-1}$
  • $\frac{1}{ohm\cdot m}$
  • $\frac{1}{ohm}$
  • $ohm^{-1}m^{-1}$ (correct)

What is the purpose of Colour coding of carbon Resistances?

  • To indicate the tolerance of the Resistance
  • To indicate the value of the Resistance (correct)
  • To indicate the power rating of the Resistance
  • To indicate the material used for the Resistance

What is the advantage of Electric Energy over other forms of energy?

  • It is more convenient to use and transport (correct)
  • It is a more efficient form of energy
  • It is more environmentally friendly
  • It can be easily converted into other forms of energy

What is the principle of Kirchhoff's laws?

<p>The sum of the currents entering a junction is equal to the sum of the currents leaving the junction (A)</p> Signup and view all the answers

What is the application of Wheatstone bridge?

<p>To measure the unknown resistance (B)</p> Signup and view all the answers

What is the unit of electric current?

<p>Ampere (C)</p> Signup and view all the answers

What is the phenomenon where certain materials exhibit zero electrical resistance at very low temperatures?

<p>Superconductivity (D)</p> Signup and view all the answers

What is the combination of resistances where the current passes through each resistor in sequence?

<p>Series combination (C)</p> Signup and view all the answers

What is the factor that affects the resistance of a conductor?

<p>Length, temperature, and cross-sectional area (D)</p> Signup and view all the answers

What is the device used to measure an unknown resistance using a wheatstone bridge circuit?

<p>Slide wire bridge (B)</p> Signup and view all the answers

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