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

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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?

The sum of the currents entering a junction is equal to the sum of the currents leaving the junction Signup and view all the answers

What is the application of Wheatstone bridge?

To measure the unknown resistance Signup and view all the answers

What is the unit of electric current?

Ampere Signup and view all the answers

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

Superconductivity Signup and view all the answers

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

Series combination Signup and view all the answers

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

Length, temperature, and cross-sectional area Signup and view all the answers

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

Slide wire bridge Signup and view all the answers