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Resistance

Total questions: 70

Worksheet time: 2hrs 15mins

Name
Class
Date
1.

a)

A

b)

B

c)

C

d)

D

2.

a)

A

b)

B

c)

C

d)

D

3.

a)

A

b)

B

c)

C

d)

D

4.

a)

A

b)

B

c)

C

d)

D

5.

a)

A

b)

B

c)

C

d)

D

6.

a)

A

b)

B

c)

C

d)

D

7.

a)

A

b)

B

c)

C

d)

D

8.

a)

A

b)

B

c)

C

d)

D

9.

a)

A

b)

B

c)

C

d)

D

10.

a)

A

b)

B

c)

C

d)

D

11.

What is the unit of measurement for resistance?

a)

Voltage

b)

Ampere

c)

Watts

d)

Ohms

12.

How to you calculate the total resistance in a series circuit?

a)

R1 + R2+ R3

b)

R1 - R2 - R3

c)

1/R1 + 1/R2 + 1/R3

d)

R1 = R2 = R3

13.

How do you calculate total resistance in a parallel circuit?

a)

R1 + R2 + R3

b)

R1 - R2 - R3

c)

1/R1 +1/R2 + 1/R3 = 1/RT

d)

R1 = R2 = R3

14.
What is Resistance?
a)
the degree to which a circuit component opposes the passage of an electric current, causing energy dissipation
b)
How hard the energy is pushed
c)
The amount of charges that pass by a given point per second
d)
None of the above
15.

What is the equivalent or total resistance (Re) across this circuit?

a)

3 kΩ

b)

10 kΩ

c)

13 kΩ

d)

18 kΩ

16.
Which resistor will prevent the most current flow?
a)
1 ohm
b)
100 ohms
c)
1000 ohms
d)
0.5k ohms
17.
How does resistance affect current?
a)
less resistance - less current
b)
more resistance - less current
c)
more resistance - more current
d)
resistance does not affect current
18.

How would the equivalent resistance be determined?

a)

1 / Req = (1/5) + (1/8) + (1/3) Ω

b)

120 Ω

c)

1.5189873 Ω

d)

1 / Req = (1/5) * (1/8) * (1/3) Ω

19.

the formula to find current when the values of V and R are known is

a)

I = V2R

b)

I = V/R

c)

I = R/V

d)

I=VR

20.
What size resistor would produce a 3 Amp current flow with a 12 Volt battery
a)
1 Ohm
b)
3 Ohms
c)
4 Ohms
d)
12 Ohms
21.
The equivalent resistance in this circuit is 
a)
100 ohms
b)
450 ohms
c)
400 ohms
d)
30 ohms
22.

RT = ?

a)

3.66 ohms

b)

4.77 ohms

c)

5.88 ohms

d)

11 ohms

23.

RT = ?

a)

4.8 ohms

b)

6.5 ohms

c)

15 ohms

d)

25 ohms

24.

If each resistor is 3 ohms, what is the RT?

a)

3 ohms

b)

1 ohms

c)

6 ohms

d)

9 ohms

25.

R1 = 10 ohms

R2 = 2 ohms

RT = ?

a)

1.67 ohms

b)

3.67 ohms

c)

12 ohms

d)

22 ohms

26.

RT = ?

a)

16.67 ohms

b)

66.67 ohms

c)

96.67 ohms

d)

150 ohms

27.

The method to solve for this scenario is known as the...

a)

Product Over Sum Method

b)

Reciprocal Method

c)

Value Over Number Method

d)

Scientific Method

28.

R1 = 40 ohms

R2 = 40 ohms

RT = ?

a)

2 ohms

b)

20 ohms

c)

10 ohms

d)

5 ohms

29.

R1 = 10K ohms

R2 = 1K ohms

a)

408.7 ohms

b)

909.1 ohms

c)

1.5K ohms

d)

11K ohms

30.

Of the three scenarios you could encounter regarding resistors in parallel, which one uses the reciprocal method?

a)

Multiple resistors that are all the same value

b)

Three or more resistors of different value

c)

Two resistors of unequal value

31.

Of the three scenarios you could encounter regarding resistors in parallel, which one uses the product over sum method?

a)

Multiple resistors that are all the same value

b)

Three or more resistors of unequal value

c)

Two resistors of unequal value

32.

Of the three scenarios you could encounter regarding resistors in parallel, which one solves RT by dividing the value of one resistor by the number of resistors in parallel?

a)

Multiple resistors that are all the same value

b)

Three or more resistors of unequal value

c)

Two resistors of unequal value

33.

What is the equivalent or total resistance (Re) across this circuit?

a)

3 kΩ

b)

10 kΩ

c)

13 kΩ

d)

18 kΩ

34.
How does resistance affect current?
a)
less resistance - less current
b)
more resistance - less current
c)
more resistance - more current
d)
resistance does not affect current
35.
Which one, top or bottom, offers more resistance?
a)
top
b)
bottom
c)
neither
36.

Solve for the total resistance of the circuit shown

a)

50 V

b)

1970 ohms

c)

705 K ohms

d)

20 Amps

37.

This circuit has only one path for current to flow

a)

series

b)

parallel

c)

combination

d)

split

38.

__________ remains the same in a series circuit.

a)

Resistance

b)

Voltage

c)

Current

d)

Power

39.

Which circuit diagram represents the correct way to measure the current in a resistor?

a)
b)
c)
d)
40.

When only one lightbulb blows out, an entire string of decorative lights goes out. The lights in this string must be connected in

a)

series with multiple current pathways

b)

series with one current pathway

c)

parallel with multiple current pathways

d)

parallel with one current pathway

41.
This is an example of a _______ circuit
a)
open
b)
series
c)
parallel
d)
square
42.
What kind of circuit is this?
a)
Series
b)
Consecutive
c)
Parallel
d)
Training
43.
A series circuit has ____ path(s) that the electric current can take. 
a)
One
b)
Two 
c)
Three 
d)
Four
44.
The equivalent resistance in this circuit is 
a)
100 ohms
b)
450 ohms
c)
400 ohms
d)
30 ohms
45.

Three resistors, with values of 2.0, 4.0 and 8.0 ohms, respectively, are connected in series. What is the overall resistance of this combination?

a)

0.58 ohms

b)

1.1 ohms

c)

7.0 ohms

d)

14.0 ohms

46.

If the current through a resistor is 2A and the voltage across it is 12V, what is the resistance

a)

12Ω

b)

6Ω

c)

24Ω

d)

0.167Ω

47.

If a circuit has two resistors in series both are 4Ω, what is the total resistance of the circuit?

a)

1Ω

b)

2Ω

c)

4Ω

d)

8Ω

48.

What is the unit of resistance

a)

Ohm

b)

Home

c)

Amp

d)

Camp

49.
If the voltage is increased and the resistance stays the same, current will ____.
a)
Increase
b)
Decrease
c)
Stay the same
d)
Not enough info
50.
If the voltage stays the same and resistance is increased, current will ________. 
a)
Increase
b)
Decrease
c)
Stay the same
d)
Not enough info
51.
If a battery produces 12.6 Volts, what would be the current for a 6 Ohm resistor?
a)
2.1 Amps
b)
75.6 Amps
c)
0.5 Amps
d)
15 Amps
52.
A light circuit is operating at 75 Volts. What is the circuit's current if the resistance is 5 Ohms?
a)
375 Amps
b)
50 Amps
c)
15 Amps
d)
0.07 Amps
53.

What is the total resistance in this circuit?

a)

2.86 Ohms

b)

32 Ohms

c)

35 Ohms

d)

0.35 Ohms

54.

What is the total resistance of this circuit?

a)

25 Ω

b)

75 Ω

c)

100 Ω

d)

18.75 Ω

55.

What is the total resistance of this circuit?

a)

100 Ω

b)

200 Ω

c)

0.063 Ω

d)

15.8 Ω

56.

What is the total resistance of this circuit?

a)

0.012 Ω

b)

85.9 Ω

c)

400 Ω

d)

150 Ω

57.

What is the total resistance of this circuit?

a)

0.18 Ω

b)

5.45 Ω

c)

60 Ω

d)

6000 Ω

58.

What is the total resistance in this circuit?

a)

18 ohms

b)

9.0 ohms

c)

4.2 ohms

d)

6.6 ohms

59.

What is the total resistance in this circuit?

a)

15 ohms

b)

9.0 ohms

c)

45 ohms

d)

8.8 ohms

60.

What is the total resistance in this circuit?

a)

5.5 ohms

b)

2.0 ohms

c)

0.82 ohms

d)

7.3 ohms

61.

What is the total resistance in this circuit?

a)

22 ohms

b)

12.7 ohms

c)

3.2 ohms

d)

19 ohms

62.

What is the total resistance in this circuit?

a)

110 Ohms

b)

30 Ohms

c)

10 Ohms

d)

25 Ohms

63.

What is the total resistance of this circuit

a)

.18Ω

b)

5.45Ω

c)

60Ω

d)

6000Ω

64.
a)

.012Ω

b)

85.9Ω

c)

400Ω

d)

150Ω

65.

Find the total resistance of the circuit

a)

.068Ω

b)

14.6Ω

c)

400Ω

d)

200Ω

66.

Find the total resistance of the circuit

a)

200Ω

b)

100Ω

c)

.063Ω

d)

15.8Ω

67.

What is the total resistance of the circuit?

a)

100Ω

b)

200Ω

c)

.063Ω

d)

15.8Ω

68.

Find the total resistance of the circuit

a)

25Ω

b)

75Ω

c)

100Ω

d)

18.75Ω

69.

Find the total resistance of the Circuit

a)

100Ω

b)

1.09Ω

c)

.92Ω

d)

33Ω

70.

Find the total resistance of the circuit

a)

42.1

b)

2.55

c)

.39

d)

52.9

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