TVO ILC
SNC1D
Assessment grading of your learning
Assessment for grading of your learning
Evaluating the use of ammonia as a household cleaner
Student name: ___________________________________ Date: ________________
This is an Assessment grading, which is used to evaluate your work based on
established criteria and to assign a mark. Your teacher will provide you with feedback
and a mark which is worth 12% of your final grade.
Unit
Unit title
4
Electricity
Level/Mark
Percentage of term work
________/12%
Learning goals
Here are some learning goals for this unit. We are learning to
•
•
investigate the relationship between potential difference, current, and resistance in
electrical circuits.
demonstrate an understanding of the principles of static and current electricity.
Now is your opportunity to demonstrate your learning. There are four (4) tasks in this
Assessment grading.
Task 1: Circuit diagrams
Circuit diagrams
Draw a circuit diagram for the descriptions below. Remember to use the proper symbols
and ensure that your diagrams have a rectangular shape. You do not have to put in the
arrows showing the flow of electrons.
1.
a) Three cells in parallel, two light bulbs (loads) in series, with one switch.
b) Three cells in series and three light bulbs in parallel, with each light bulb being
able to be switched on independently.
c) Two cells in series, a light bulb in series with one switch, and two light bulbs in
parallel.
d) Two cells in series, parallel to another two cells in series, and two bulbs in
parallel and another two bulbs in series. There is one switch.
2.
In circuit (a), assume the voltage in the circuit is 1.5 V in total. How much
voltage is passing through each light bulb?
3.
In circuit (b), assume the cells produce 4.5 V in total. How much voltage is
passing through each light bulb?
Copyright © 2018 The Ontario Educational Communications Authority. All rights reserved.
1
TVO ILC
SNC1D
Assessment grading of your learning
Task 2: Problem solving
1.
A 14 V battery powers the headlights of a car. What is the resistance of the
headlights if they draw 3.0 A of current when turned on?
2.
A toaster has a resistance of 28 Ω and is plugged into a 110 V circuit. Using the
GRASS method, what current is measured?
3.
A microwave oven draws 12 A of current on a 110 V household circuit. What
is its power rating?
4.
What current is drawn by a 90 W light bulb on a 110 V household circuit?
Task 3: AC and DC current
Compare and contrast AC and DC current. Explain why AC rather than DC current is
used in homes to supply electricity.
Copyright © 2018 The Ontario Educational Communications Authority. All rights reserved.
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