Q: A loop that consists of 200 ( N ) turns and an area ( A ) of 0.25 m2 is located in a downward-directed magnetic field ( B ) of 0.40 T. Additionally, the loop’s coils have a resistance ( R ) of 5.0 Ω. If the coils are crushed to an area ofContinue reading “MAGNETISM AND ELECTROMAGNETISM: Lenz’ Law”
Tag Archives: Ohm's Law
INTRODUCTION TO ELECTRONICS: Wheatstone Bridge Voltage and Current Determination
A Wheatstone bridge circuit has the following voltage ( Vs ) and resistor ( R ) values: Q: What is the value for the voltage ( VL ) drop and current ( I ) across the load resistor ( RL )? A: We begin by removing the load resistor and marking the new terminals ofContinue reading “INTRODUCTION TO ELECTRONICS: Wheatstone Bridge Voltage and Current Determination“
INTRODUCTION TO ELECTRONICS: Thevenizing a Wheatstone Bridge Circuit
Many simple circuits can be categorized as being either a series circuit, parallel circuit, or a combination series-parallel circuit. To the contrary, analysis of Wheatstone bridge circuits is comparatively difficult, because no clear cut series-parallel relationship exists between its component resistors: Thevenin’s theorem enables us to analyze the circuit with convenience via removal of theContinue reading “INTRODUCTION TO ELECTRONICS: Thevenizing a Wheatstone Bridge Circuit”
INTRODUCTION TO ELECTRONICS: Power in Parallel Circuits
Power is the rate at which energy is deposited within ( or liberated from ) some medium. As pertains to electronics, the watt is a measure of how many joules ( J ) of energy are deposited per second within the resistive elements of a circuit. The SI unit of power is the watt (Continue reading “INTRODUCTION TO ELECTRONICS: Power in Parallel Circuits“
INTRODUCTION TO ELECTRONICS: Power in Series Circuits
Thus far, we have seen how the net resistance ( R ) to current ( I ) flow within a series circuit is the sum of all the resistors that are present: Rt = R1 + R2 + R3 +…Rn The voltage ( V ) drop that occurs as a coulomb ( C ) ofContinue reading “INTRODUCTION TO ELECTRONICS: Power in Series Circuits“
INTRODUCTION TO ELECTRONICS: Kirchhoff’s Laws ( Part 5 )
We are now ready to complete the Part 3 exercise using Kirchhoff’s Node and Loop Rules: Due to the presence of nodes at points C and E, differing current ( I ) values will be used to evaluate the voltage ( V ) drops that occur around each loop. There are three unique circuit pathwaysContinue reading “INTRODUCTION TO ELECTRONICS: Kirchhoff’s Laws ( Part 5 )“
INTRODUCTION TO ELECTRONICS: The Voltage-Divider Formula
Thus far, we have seen how the sum of voltage drops across a series circuit is equal to the voltage value of the source ( Vs ): Vs = V1 + V2 + V3 In the aforementioned scenario, three resistors are situated within a non-diverging electrical path; thus, each resistor along the electrical path hasContinue reading “INTRODUCTION TO ELECTRONICS: The Voltage-Divider Formula“
INTRODUCTION TO ELECTRONICS: Resistors in Series Circuits
The voltage ( V ) or “ potential difference “ of a DC power source is the drop in energy ( J ) that a coulomb ( C ) of charge will experience by traveling through a resistance ( R ) found within a circuit. The current in question flows along a closed, non-diverging route:Continue reading “INTRODUCTION TO ELECTRONICS: Resistors in Series Circuits”
INTRODUCTION TO ELECTRONICS: Ohm’s Law
The graph of a straight line represents a proportional relationship between input variables and output values; with every increase ( or decrease ) in input values, a proportionate change in output can be expected. The graph of a straight line can be graphed via usage of the following formula: y = mx + b ForContinue reading “INTRODUCTION TO ELECTRONICS: Ohm’s Law”
FINDING THE LOWEST COMMON DENOMINATOR ( LCD ) OF FRACTIONS AND DETERMINING THE TOTAL RESISTANCE ( Rt ) OF PARALLEL ELECTRICAL CIRCUITS:
FINDING THE LOWEST COMMON DENOMINATOR: Let’s first envision putting two half pieces of a pie together to get a full pie. Numerically, this would involve adding ( 1/2 ) + ( 1/2 ) = ( [ 1 + 1 ] / 2 ) = ( 2/2 ) = 1 whole pie. This example was madeContinue reading “FINDING THE LOWEST COMMON DENOMINATOR ( LCD ) OF FRACTIONS AND DETERMINING THE TOTAL RESISTANCE ( Rt ) OF PARALLEL ELECTRICAL CIRCUITS:”
RENAISSANCE PHYSICS 