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SO Circuit Lab

Total questions: 50

Worksheet time: 39mins

Name
Class
Date
1.
What kind of circuit is this?
a)
series
b)
parallel
2.
What kind of circuit is this?
a)
Series
b)
Consecutive
c)
Parallel
d)
Training
3.
The light bulb in the circuit is an example of _______. 
a)
Load
b)
Battery source
c)
Energy pathway
d)
All of them
4.
This circuit has more than one loop. When one light goes out, the others stay on. 
a)
closed circuit
b)
series circuit
c)
parallel circuit
d)
open circuit
5.
When there is only one path for electrons to move through it is called a _____. When one light goes out, they all go out. 
a)
closed circuit
b)
parallel circuit
c)
series circuit
d)
open circuit
6.
The loads in a series circuit do not share the available voltage.
a)
True
b)
False
7.
Across all the paths in a parallel circuit the voltage is the same,
a)
True
b)
False
8.
A circuit must be closed for electrons to travel.
a)
true
b)
false
9.
A circuit is not the path that electricity follows.
a)
true
b)
false
10.

Which one is a lamp?

a)
b)
c)
11.

Which one is a Cell ?

a)
b)
c)
12.

Which one is a switch ?

a)
b)
c)
13.

Which one is a buzzer ?

a)
b)
c)
14.

Which one is a motor ?

a)
b)
c)
15.
a)

i1 + i5 +i4 = i2 + i3

b)

i1 + i5 +i3 = i2 + i4

c)

i5 + i2 +i4 = i1 + i3

d)

i1 + i5 = i2 + i3 + i4

16.

Which equations are correct?

a)

ε1 - i1R1 - i2R2 = 0

b)

ε1 + ε2 + i3R3 - i2R2 = 0

c)

ε1 - i2R1 - i2R2 = 0

d)

ε1 - ε2 - i3R3 + i2R2 = 0

17.

Two 4000 Ω are connected in parallel, and then these are connected in series to another pair of parallel wired resistors to give a total circuit resistance of 6000 Ω. What are the possible values of the other pair?

a)

both 8000 Ω

b)

both 4000 Ω

c)

one 5500 Ω and the other 8000 Ω

d)

one 6000 Ω and the other 12000 Ω

18.

Find the total resistance.

a)

12Ω

b)

6Ω

c)

18Ω

19.
a)
A2 = A3
b)
A2 + A3 = A1
c)
A1 + A2 = A3
d)
A4 = A2 - A3
20.
a)
Circuit X is brighter than circuit Y
b)
Circuit Y is brighter than circuit X
c)
Both circuits have the same brightness
d)
Neither circuit will light the bulbs
21.
Assuming each resistor has the same resistance, which resistor will have the greatest current?
a)
R1
b)
R5
c)
R6
d)
R7
22.

Four unequal resistors are connected in series with each other. Which one of the following statements is correct about this combination?

a)

The equivalent resistance is equal to that of any one of the resistors.

b)

The equivalent resistance is equal to average of the four resistances.

c)

The equivalent resistance is less than that of the smallest resistor.

d)

The equivalent resistance is less than that of the largest resistor.

e)

The equivalent resistance is more than the largest resistance.

23.

Draw a circuit with a battery connected to four resistors, R1, R2, R3, and R4, as follows. Resistors R1 and R2 are connected in parallel with each other, resistors R3 and R4 are connected in parallel with each other, and both parallel sets of resistors are connected in series with each other across the battery.

a)
b)
c)
d)
24.

Four resistors are connected across an ideal dc source of V = 8.0 V, as shown in the figure. Assume all resistances shown are accurate to two significant figures. What is the current through the 9.0-Ω resistor?

a)

1.0 A

b)

0.67 A

c)

0.50 A

d)

0.90 A

25.

If emf of the ideal battery is V = 100 V, what is the potential difference across R5 for the circuit shown in the figure?

a)

19 V

b)

40 V

c)

75 V

d)

77 V

26.

A 3.0-Ω resistor is connected in parallel with a 6.0-Ω resistor. This combination is then connected in series with a 4.0-Ω resistor. The resistors are connected across an ideal 12-volt battery. How much power is dissipated in the 3.0-Ω resistor?

a)

2.7 W

b)

5.3 W

c)

6.0 W

d)

12 W

27.
What is Resistance?
a)
The flow of electrons
b)
Electric potential difference
c)
A battery
d)
The ability to reduce the flow of electrons
28.
What is the Voltage of a circuit that has a resistance of 5 Ω and a current of 2 A?
a)
25 V
b)
10 V
c)
2.5 V
d)
0.4 V
29.
The equivalent resistance in this circuit is 
a)
100 ohms
b)
450 ohms
c)
400 ohms
d)
30 ohms
30.
The voltage dropped across the 300 ohm resistor is 
a)
6 V
b)
9 V
c)
2 V
d)
30 V
31.
The power consumed by the 100 ohm resistor is 
a)
0.02 W
b)
0.04 W
c)
100 W
d)
9 W
32.
The voltage drop across the 180 ohm resistor is 
a)
9 V
b)
6 V
c)
2 V
d)
12 V
33.
If the two charges represented in the figure were brought near each other, they would
a)
attract each other.
b)
repel each other.
c)
cause static discharge.
d)
have no affect on each other
34.

Two balls are placed near one another and hang down, as shown below.


Which conclusion is supported by this evidence?

a)

Neither ball has a charge.

b)

The balls are both positively charged.

c)

One ball is positively charged, and the other is negatively charged.

d)

Each ball has a charge, but the type of charge is unknown.

35.

A negatively charged rod is placed near two neutral metal spheres, as shown below.


Which statements describe the charging method shown? Check all that apply.

a)

The spheres develop opposite charges.

b)

The spheres develop the same charge.

c)

Electrons move from Sphere A to Sphere B.

d)

The spheres are charged through conduction.

e)

The spheres are charged through induction.

36.

The diagram shows two charged objects, X and Y.


Based on the field lines, what are the charges of the objects?

a)

X: positive

Y: negative

b)

X: negative

Y: positive

c)

X: negative

Y: negative

d)

X: positive

Y: positive

37.

How does increasing the distance between charged objects affect the electric force between them?

a)

The electric force increases because the distance has an indirect relationship to the force.

b)

The electric force increases because the distance has a direct relationship to the force.

c)

The electric force decreases because the distance has an indirect relationship to the force.

d)

The electric force decreases because the distance has a direct relationship to the force.

38.

The image shows the electric field lines around two charged particles.


At which position would the electric force be greatest?

a)

1

b)

2

c)

3

d)

4

39.
A magnet will attract scissors if the scissors contain: 
a)
copper
b)
aluminum
c)
gold
d)
nickel
40.
Where is the strongest attraction force of the magnet?
a)
at the poles
b)
in the middle
c)
above the magnet
d)
below the magnet
41.
How are the domains of an ordinary piece of metal organized?
a)
The domains are very strong
b)
The domains are all mixed up
c)
The domains all point in the same direction
d)
There is no such thing as domains
42.
How do you increase the strength of an electromagnet?
a)
Decrease the number of batteries and increase the number of coils
b)
Increase the electric current and decrease the batteries
c)
You cannot strengthen an electromagnet
d)
Increase the electric current and increase the number of coils
43.

Which of the equations is valid for the circuit below?

a)

2 – I1 – 2I2 = 0

b)

2 – 2I1 – 2I2 – 4I3 = 0

c)

2 – I1 – 4 – 2I2 = 0

d)

I3 – 4 – 2I2 + 6 = 0

e)

2 – I1 – 3I3 – 6 = 0

44.

What is the loop rule for the outside loop?

a)

8 V - I3(4) + I1(1) = 0

b)

4 V - I3(4) + I1(1) = 0

c)

8 V - I3(4) - I1(1) = 0

d)

4 V - I3(2) + I1(1) = 0

45.

On a transformer with 100 volts applied to the primary, 200 turns in the primary, and a secondary

with 100 turns, the secondary voltage is ____________________ volts.

a)

75

b)

100

c)

125

d)

50

46.

Unless otherwise noted, the calculations in AC circuits use _____.

a)

peak value

b)

median values

c)

phase values

d)

rms values

47.

In AC circuits containing only resistance, _____.

a)

all DC rules and laws apply, including Ohm's law

b)

no DC rules and laws apply

c)

only Kirchhoff's law applies

d)

Ohm's law is 90° out of phase

48.

A transistor has …………………

a)

one pn junction

b)

two pn junctions

c)

three pn junctions

d)

four pn junctions

49.

What are the names of the terminals X, Y and Z?

a)

X = Base, Y = Collector, Z = Emitter

b)

X = Emitter, Y = Base, Z = Collector

c)

X = Collector, Y = Base, Z = Emitter

d)

X = Collector, Y = Emitter, Z = Base

50.

The base of the transistor is a ....................... layered sandwich.

a)

Thickly

b)

Evenly

c)

Thinly

d)

None of the above

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