Deck 5: Series Circuits

Question 1

Voltage polarity can be determined by observing the ____ of current flow through the circuit.

A) resistance
B) direction
C) magnitude
D) reluctance

Answer 1

B

Question 2

The amount of current flow in the circuit can be found by using ____ Law.

A) Lenz's
B) Fleming's
C) Ohm's
D) Seebeck's

Answer 2

C

Question 3

An example of a series-connected device is a circuit breaker.

Answer 3

True

Question 4

A series circuit has 2 100-ohm resistors and 2 200-ohm resistors. What is the total resistance?

A) 100 ohms
B) 200 ohms
C) 300 ohms
D) 600 ohms

Question 5

In a circuit with an applied voltage of 120 V and a total resistance of 60 ohms, how much current flows through each resistor?

A) 1 A
B) 2 A
C) 3 A
D) 4 A

Question 6

____ are used to provide different voltages across certain points.

A) Voltage droppers
B) Voltage grounders
C) Voltmeters
D) Voltage dividers

Question 7

The total amount of series resistance offered to the flow of current is ____ to the sum of all the resistors in the circuit.

A) the same as
B) not related to
C) proportional
D) inversely proportional

Question 8

The total power used in a circuit ____ the power used by all parts.

A) is equal to the product of
B) is equal to the average of
C) has no relation to
D) is equal to the sum of

Question 9

In a series circuit, the ____ of all the voltage drops across all resistors must equal the ____.

A) sum; voltage applied to the circuit
B) product; voltage applied to the circuit
C) sum; current
D) product; current

Question 10

If the voltage drop across a resistor is 20 V and the current is 0.02 A, what is the power dissipated in watts?

A) 0.02
B) 0.4
C) 4
D) 20

Question 11

Voltage dividers can be constructed to produce any voltage desired.

Question 12

If the voltage drop across a resistor is 12.5 V and the resistance is 250 ohms, what is the power dissipated in watts?

A) 0.125
B) 0.375
C) 0.500
D) 0.625

Question 13

What is Ohm's Law?

A)
B)
C)
D)

Question 14

Current remains the same at any point in the series circuit.

Question 15

The symbols for earth ground and chassis ground are the same.

Question 16

In voltage divider circuits, ground is often used to provide a common reference point.

Question 17

____ is the force that pushes the electrons through a resistance.

A) Permeability
B) Reluctance
C) Current
D) Voltage

Question 18

A series circuit has ____ path(s) for current flow.

A) one
B) two
C) three
D) four

Question 19

If the current becomes excessive, the fuse or circuit breaker will ____.

A) close
B) reinforce the connection
C) disconnect the rest of the circuit
D) make a connection to ground

Question 20

A(n) ____ ground is a point that is used as a common connection for other parts of a circuit but is not actually driven into the ground.

A) earth
B) polarity
C) divider
D) chassis