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Electricity and Magnetism Questions and Answers, Exams of Electrical and Electronics Engineering

Chamberlain College of NursingElectrical and Electronics Engineering

A collection of questions and answers related to electricity and magnetism, covering fundamental concepts and applications. It includes topics such as ohm's law, circuits, capacitors, resistors, transistors, and magnetic fields. Suitable for students studying basic electrical engineering or physics.

Typology: Exams

2024/2025

Available from 01/09/2025

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TPC Electricity And Magnetism Questions With
Solutions
If capacitors are connected in PARALLEL their combined capacities is
______________ the sum of their individual capacities Right Ans - Equal to
POWER is measured in Right Ans - Watts
The COMBINED resistance of two 100 ohms resistors connected in a parallel
would equal Right Ans - 50 ohms
Ohms law can be MATHEMATICALLY expressed in which equation Right
Ans - E=I(R)
JIC symbol (rectangular figure) represents Right Ans - Rheostat
The 4th color band on a resistor is SILVER, the measured value of resistance is
within________ of the marked value Right Ans - 10%
The CENTER section of a transistor is called the Right Ans - Base
An optoisolator recites a LOW voltage signal on LED side of the device and
triggers a ________ voltage on the out-put Right Ans - Higher
If a GAP exists in an electric current, the circuit is said to be_______ Right Ans
- Open
a WATT is defined as a joule per ______ Right Ans - Second
AMPERES is the standard unit of measurement for _________ Right Ans -
Electric current
In order to dissipate the HEAT of high current loads a resistor must be
physically _________ Right Ans - Large
If the POTENTIAL DIFFERENCE across a resistor decreases to zero, the
current ___________ Right Ans - Decreases to Zero
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TPC Electricity And Magnetism Questions With

Solutions

If capacitors are connected in PARALLEL their combined capacities is ______________ the sum of their individual capacities Right Ans - Equal to POWER is measured in Right Ans - Watts The COMBINED resistance of two 100 ohms resistors connected in a parallel would equal Right Ans - 50 ohms Ohms law can be MATHEMATICALLY expressed in which equation Right Ans - E=I(R) JIC symbol (rectangular figure) represents Right Ans - Rheostat The 4th color band on a resistor is SILVER, the measured value of resistance is within________ of the marked value Right Ans - 10% The CENTER section of a transistor is called the Right Ans - Base An optoisolator recites a LOW voltage signal on LED side of the device and triggers a ________ voltage on the out-put Right Ans - Higher If a GAP exists in an electric current, the circuit is said to be_______ Right Ans

  • Open a WATT is defined as a joule per ______ Right Ans - Second AMPERES is the standard unit of measurement for _________ Right Ans - Electric current In order to dissipate the HEAT of high current loads a resistor must be physically _________ Right Ans - Large If the POTENTIAL DIFFERENCE across a resistor decreases to zero, the current ___________ Right Ans - Decreases to Zero

a CATHODE has a _________ charge Right Ans - Negative When trying to solve a SERIES-PARALLEL problem you should first________ Right Ans - Divide the circuit into smaller parts One COMPLETE cycle alternate current is generated by a ____________ rotation of a two pole operation Right Ans - 360 degree The POTENTIAL DIFFERENCE between two points is measured in ________ Right Ans - Volts If a circuit has two PARALLEL paths the larger fraction of the current follows the __________ Right Ans - Path with the lower resistance The higher resistance HEATING ELEMENT in an electric heater is usually made of __________ Right Ans - Nichrome Wire Electricity is easier to understand if you think of VOLTAGE as electrical ____________ Right Ans - Pressure POTENTIAL ENERGY is measured in Right Ans - Joules The ability to do work Right Ans - Energy All modern electrical equipment is based on a understanding of the RELATIONSHIP between____________ Right Ans - Electricity and Magnetism Two UNLIKE magnetic poles _____________ each other Right Ans - Attract two objects that have the SAME electrical charges {(+),(+)} will ____________ each other Right Ans - Repel The purpose of a POTENTIOMETER is to ___________ Right Ans - Divide a potential difference into two parts Identical cells in PARALLEL provides greater __________ than a single cell Right Ans - Current Capacity

What is the flow from NEGATIVE to POSITIVE called? Right Ans - Electron Flow Acts similar to resistors, OPPOSES changes in current. (+) or (-). Right Ans - Inductors In a SERIES circuit, the ________ is the SAME at all points in the circuit. Right Ans - Current In a PARALLEL circuit, the ______ is the SAME at all branches of the circuit. Right Ans - Voltage The NEC defines a qualified person as Right Ans - someone who is familiar with equipment operation and hazards symbol is (E) in ohms law equation Right Ans - Voltage symbol is (I) in ohms law equation Right Ans - Current symbol is (R) in ohms law equation Right Ans - Resistance A subatomic particle that has a POSITIVE charge and that is found in the nucleus of an atom Right Ans - Proton Has NO electrical charge and is considered neutral Right Ans - Neutron One _________ is equal to one coulomb per second. Right Ans - Ampere the amount of CHARGE a capacitor can store compared to the potential difference between terminals Right Ans - Capacitance A ________ semiconductor has a (-) charge and is also called a DONOR because it donates electrons to other materials. Right Ans - N-type A ______ semiconductor has a (+) charge and is also called an ACCEPTOR because it "accepts" electrons from other materials. Right Ans - P-type

The effect of the current on the human body depends on 3 factors: the intensity of current, the duration of the current, and the _______. Right Ans - pathway of the current Which kind of device is used in hazardous conditions, can only release low levels of electricity, and can not explode? Right Ans - Intrinsically Safe Wearing heavy cotton clothing is considered safe. What material is not considered safe when working around electricity? Right Ans - Polyester Factory Mutual (FM) and Underwriter's Laboratories (UL) are both recognized as certified __________. Right Ans - Testing Laboratories example of what law Right Ans - Ohm's