• Study Resource
• Explore

Survey

* Your assessment is very important for improving the work of artificial intelligence, which forms the content of this project

Transcript
```Ch. 23 Electric Current
Clicker Activities
 You
will be shown four different
arrangements of light bulbs connected to
batteries with conducting wires. The
arrangements will vary with their being
between 0 and 4 light bulbs connected in
series. Assume all pieces in the circuit
behave perfectly. A voltmeter will be
used to measure the potential difference
between the terminals of the battery.
V1
V2
V3
V4
Rank the potential difference measured
between the two battery terminals from the
greatest to the least. If there are any ties
indicate them.
A.
B.
C.
D.
E.
V1 > V2 > V3 > V4
V4 > V3 > V2 > V1
V1 = V4 > V2 = V3
V1 = V2 = V3 = V4
Cannot be determined
What was the reason that you
ranked them that way?
A.
B.
C.
D.
E.
The more resistors, the more voltage
the battery supplies
The more resistors the less voltage a
battery supplies
The voltage is used by the first light
bulb, then the next …
The bulbs on the end use up the
voltage first
Ideal batteries always provide the
same voltage
How confident are you about your
A.
B.
C.
D.
E.
I know I’m right
I’m pretty sure
Neutral
I’m mostly guessing
I’m completely guessing
Task – A student builds a series circuit
with a battery and three identical light
bulbs. She correctly determines that the
circuit will draw .3 A. Between each
circuit element she inserts an ammeter.
Before closing the switch she predicts
what the reading of each ammeter will
be as shown in the next slide. What if
anything is wrong with her prediction?
.3 A
.2 A
.1 A
0.0 A
What if anything is wrong with the predicted
A.
B.
C.
D.
E.
Nothing the predictions are correct
The values are correct but the order of the
The readings should all be the same
The readings should be greater on the outer
ammeters
The readings should be greater in the middle
How confident are you about your
A.
B.
C.
D.
E.
I know I’m right
I’m pretty sure
Neutral
I’m mostly guessing
I’m completely guessing
Several Circuits will be modified
by changing the number of light
the light bulbs will change the
reading on the ammeter and the
brightness of each bulb.
Consider the following circuit. An
questions.
What will happen to the reading
on the ammeter?
A.
B.
C.
D.
It will increase
It will decrease
It will remain the same
A.
B.
C.
D.
The resistance went up so less
current
More light bulbs so more
current
The battery remains the same
so no change
What will happen to the brightness
of each light bulb when the third one
A.
B.
C.
D.
It will remain the same.
It will increase
It will decrease
Consider the following circuit. A 3rd
light bulb will be added in parallel.
What will happen to the reading
on the ammeter?
A.
B.
C.
D.
It will increase
It will decrease
It will remain the same
A.
B.
C.
D.
The resistance went up so
less current
More light bulbs so more
current
The battery remains the same
so no change
What will happen to the brightness
of each light bulb when the third one
A.
B.
C.
D.
It will remain the same.
It will increase
It will decrease
```
Document related concepts

Mains electricity wikipedia, lookup

Buck converter wikipedia, lookup

Switched-mode power supply wikipedia, lookup

Opto-isolator wikipedia, lookup

Alternating current wikipedia, lookup

Voltage optimisation wikipedia, lookup

Resistive opto-isolator wikipedia, lookup

Stray voltage wikipedia, lookup

Current source wikipedia, lookup

Ohm's law wikipedia, lookup

Rechargeable battery wikipedia, lookup

Electric battery wikipedia, lookup

Flashlight wikipedia, lookup

Similar