




Massachusetts Comprehensive Assessment System
2014, High School Technology/Engineering
Question 44: OpenResponse 

Reporting Category: Electrical and Communication Systems Standard: 5.1  Explain how to measure and calculate voltage, current, resistance, and power consumption in a series circuit and in a parallel circuit. Identify the instruments used to measure voltage, current, power consumption, and resistance.

An electrical circuit can be constructed using wire, a load, and a power source. Identify one object that can be used as a load in an electrical circuit.
Ammeters and voltmeters are instruments used to make measurements in electrical circuits. Describe how to connect an ammeter to make a measurement.
 Describe how to connect a voltmeter to make a measurement.
 Suppose you have a simple electrical circuit with one load. Describe one measurable change in the circuit that would result from connecting a second, identical load in parallel with the first load.

Scoring Guide and Sample Student Work Select a score point in the table below to view the sample student response.
Score  Description 
4 
The response demonstrates a thorough understanding of electrical circuits, including circuit components and how to measure voltage and current. The response correctly identifies one object that can be used as a load in an electrical circuit. The response clearly describes how to place an ammeter and voltmeter in a circuit. The response also clearly describes one change that results from connecting a second load in parallel. 
4 
3 
The response demonstrates a general understanding of electrical circuits, including circuit components and how to measure and calculate voltage and current. 
2 
The response demonstrates a limited understanding of electrical circuits, including circuit components and how to measure and calculate voltage and current. 
1 
The response demonstrates a minimal understanding of electrical circuits, including circuit components and how to measure and calculate voltage and current. 
0 
The response is incorrect or contains some correct work that is irrelevant to the skill or concept being measured. 
Note: There are 2 sample student responses for Score Point 4.
High School Technology/Engineering
 Question 11: Construction and Manufacturing
 Question 23: Engineering Design
 Question 33: Electrical and Communication Systems
 Question 44: Electrical and Communication Systems
 Question 45: Fluid and Thermal Systems
Return to the MCAS 2014 Student Work Directory
Last Updated: March 21, 1997


