Week 1 Worksheet 26103 Introduction to Electrical Circuits
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Lincoln Technical Institute, Lincoln *
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Dec 6, 2023
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EES103 Worksheet
26103 Introduction to Electrical Circuits
Instructions: Use the NCCER Electrical Level 1 book (Module 26103) to complete the worksheet.
1.
A 5-ohm and a 20-ohm resistor are connected in parallel. What is the total resistance of these
two resistors?
(5x20)/(5+20) = 100/25 = 4ohms
2.
How is current measured with an in-line type meter?
Using an ammeter in the circuit.
3.
What is used to step voltage down to lower levels before it reaches a home or office?
Transformers in substations.
4.
What is the applied voltage of a circuit that has 10 amps of current and 12 ohms of resistance?
10amp x 12ohms = 120v
5.
A 5-ohm and a 20-ohm resistor are connected in parallel. What is the total resistance of these
two resistors?
Same question as number 1???? But if it was connected in series……. Then 5+20= total = 25ohms
6.
Which of the following terms is defined as the driving force that makes current flow in a circuit?
Voltage which is represented by the letter E
7.
A circuit has a source voltage of 50V and a current of 10A. What is the power in watts?
50v x 10a = 500watts
8.
Voltage is defined as the __________.
the driving force that makes current flow in a circuit
© Lincoln Technical Institute. All Rights Reserved. This document contains Lincoln Tech confidential and proprietary information
and may not be copied, further distributed, or otherwise disclosed, in whole or in part, without the expressed written
permission of Lincoln Technical Institute. 8/23/2022
EES103 Worksheet
26103 Introduction to Electrical Circuits
9.
If a circuit has 12 amps of current and the resistance is 20 ohms, what is the applied voltage?
12amps x 20ohms = 240v
10.
If two 10-ohm resistors are connected in series, what is the total resistance of these resistors?
10ohms x 2 = 20ohms
11.
Make sure the voltage is turned off before touching any terminals by using a(n) _____.
solenoids
12.
A(n) _____ is the smallest electrical charged particle of an element.
atom
13.
Negatively charged particles that flow around in the nucleus are called _____.
electrons
14.
How many electrons can the inner shell of an atom hold?
2
15.
The second shell can hold _____Electrons.
8
16.
The outer shell is most responsible for the electrical property of the element. This is called the
_____.
Valence shell
© Lincoln Technical Institute. All Rights Reserved. This document contains Lincoln Tech confidential and proprietary information
and may not be copied, further distributed, or otherwise disclosed, in whole or in part, without the expressed written
permission of Lincoln Technical Institute. 8/23/2022
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