19EET304 – CIRCUIT THEORY

Which of the following formulas represents Ohm's law?

• V=L/I

• V = C⋅Q

• V=I/R

• V = I⋅R

What is the SI unit of resistance?

• Ohm

• Volt

• Ampere

• Watt

What is the formula for calculating power in an electrical circuit?

• P = V/I

• P = I⋅R

• P = V⋅I

• P = V/R

Which of the following units is used to measure electric current?

• Ohm

• Volt

• Ampere

• Watt

Which law states that the current through a conductor between two points is directly proportional to the voltage across the two points?

• Ohm's Law

• Faraday's Law

• Gauss's Law

• Lenz's Law

According to Kirchoff’s voltage law,

• The algebraic sum of all the e.m.f’s in the circuit is zero
  

• Algebraic sum all the voltage drops in the circuit is zero
  

• Algebraic sum of e.m.f’s plus algebraic sum of voltage drops is equal to zero
  

• All of these

KCL is applied at

• junction or node
• in a series circuit
• at the end of a resistor
• in a parallel circuit

Mesh analysis employs the method of

• using Ohm's law to calculate resistance
• applying Kirchhoff's voltage law (KVL) to loop currents
• applying Newton's laws to electrical circuits
• measuring current using a voltmeter

In superposition theorem, when we consider the effect of one voltage source, all the other voltage sources are

• replaced by open circuits
• doubled in value
• ignored completely
• turned off (replaced by short circuits)

Thevenin resistance is found by

• calculating the equivalent resistance of the circuit seen from the terminals where the load is connected
• ignoring the load connected to the circuit
• counting the number of components in the circuit
• measuring the voltage across the terminals