QUIZ & TEST MOD 2 SEC 2 Basic Electrical Circuits UNIT 6-8
The amount of current flowing through each resistor is directly proportional to its resistance.
False
There are many more resistance values available for 10% tolerance resistors than for 1% tolerance resistors.
False
What circuit does the image represent?
parallel
A method for finding total resistance of parallel resistors is _____.
product over sum reciprocal formula resistors of equal value
In a combination circuit, to identify series and parallel elements, you should _____.
trace the current path(s)
In tracing the path in the combination circuit shown here, the current can flow by how many separate paths from the negative terminal to the positive terminal?
two
What can be adjusted to provide any value of voltage between 12 and 0 volts?
wiper
If the wiper is moved to the bottom of the resistor, the voltmeter will indicate a value of how many volts?
0
How many amperes is present in a 20-volt battery with a 30-ohm resistor?
0.67
A parallel circuit composed of a 150 Ω and a 270 Ω resistor has a voltage of 120 V. What is the current in the 150 Ω resistor?
0.8 A
Assume a total current of 2 amperes flows in a circuit with three resistors. R1 has a value of 1400 ohms, R2 has a value of 200 ohms, and R3 has a value of 100 ohms, producing a total resistance of 80 ohms for the circuit. What is the amount of the current flow through resistor R3?
1.600
A series circuit has two resistors that dissipate 10 W and 15 W, respectively. What is the total power dissipation of the circuit?
25 W
A parallel circuit is composed of two 60 Ω resistors. What is the total resistance?
30 Ω
R1 = 240 Ω, R2 = 300 Ω, and R3 = 1200 Ω. What is the resistance between A and B?
480 Ω
A two-resistor series circuit has an applied voltage of 100 V. The voltage across one of the resistors is 40 V. What is the voltage across the other resistor?
60 V
A three-branch parallel circuit has resistors of 27 Ω, 56 Ω, and 15 Ω. What is the total resistance?
8.23 Ω
What is the applied voltage in a series circuit with two resistors of 25 V and 60 V, respectively?
85 V
Which is the accepted symbol that represents a chassis ground?
A
Which of the following formulas is the general voltage divider formula?
C Ex= (Rx/RT)ET
Refer to the diagram. Through what must all the current in the circuit flow?
R1
In the combination circuit, which two paths are parallel?
R1 and R2, R3 and R4
Refer to the diagram. At what junction point does the current split?
R2 & R3
There is very little resistance and a large amount of current flows in a(n) _____ circuit.
Short
The value of a resistor can often be determined by the "color code."
True
A combination circuit is a circuit that contains _____.
both series and parallel components
A point that is used as a common connection for other parts of a circuit not actually driven into the ground is called a _____ ground.
chassis
What type of fixed resistor is made from a compound of carbon graphite and resin bonding material?
composition carbon
Parallel circuits are also called _____.
current dividers
A voltage _____ is used to provide different voltages between certain points in a circuit
divider
What is used to represent fixed and variable resistors?
electrical schematics
What type of resistors can only have one ohmic value?
fixed
A junction point of current paths is often called a _____.
node
A series circuit has _____ path(s) for current flow.
one
Circuits that have more than one path for current flow are _____ circuits.
parallel
