Question 1

If a circuit contains three resistors whose values are 50 ohms, 30 ohms, and 70 ohms, and the total resistance of the circuit is 150 ohms, the circuit is a ____________________ circuit.

Accepted Answer

series

Question 2

A point in a circuit when current reaches a junction point of resistors and splits is called a ____________________.

Accepted Answer

node

Question 3

In a ____ circuit, the total current is the sum of the current through all of the circuit paths.&#10;A) combination&#10;B) parallel&#10;C) series

Accepted Answer

In a parallel circuit, each component has its own path for current to flow, and the total current is divided among the paths, but the sum of the current through each path is equal to the total current. In a series circuit, the current through each component is the same, but the total current is limited by the component with the highest resistance. Therefore, the total current is the sum of the current through all of the circuit paths in a parallel circuit, making choice B the best answer.

Question 4

A ____ circuit has only one path for current flow.&#10;A) open&#10;B) parallel&#10;C) series&#10;D) none of the above

Accepted Answer

The answer of A ____ circuit has only one path...

Question 5

In a combination circuit, a 100-ohm resistor is in series with two 50-ohm resistors that are in parallel with each other. The total resistance of the circuit is ____________________ ohms.

Accepted Answer

The answer of In a combination circuit, a 100-ohm resistor...

Question 6

In a ____ circuit, the sum of the voltage drops of the individual resistors must equal the applied voltage.&#10;A) combination&#10;B) parallel&#10;C) series

Accepted Answer

In a series circuit, all components are connected end-to-end, so the current flows through each component in turn. Because the components are connected in this way, the voltage is divided between them. The voltage drop across each component depends on its resistance and the current flowing through it, but the sum of the voltage drops across each component must equal the applied voltage. In a parallel circuit, the voltage across each component is the same, but the total current is divided between the components. In a combination circuit, both series and parallel components are present, but the total voltage drop is still equal to the applied voltage.

Question 7

In a ____ circuit, the current is the same at any point in the circuit.&#10;A) combination&#10;B) parallel&#10;C) series

Accepted Answer

In a series circuit, the current flows through each component of the circuit in sequence, so the same current flows through every part of the circuit. This is because there is only one path for the current to take, so it cannot split or vary. In contrast, in a parallel circuit, the current can split and vary depending on the resistance of each branch, so the current is not the same at any point in the circuit. A combination circuit is a circuit that has both series and parallel components, so the current may vary depending on the configuration of the circuit.

Question 8

A ____ circuit has more than one path for current flow.&#10;A) open&#10;B) parallel&#10;C) series&#10;D) none of the above

Accepted Answer

A parallel circuit has more than one path for current flow. In a series circuit, there is only one path for current flow and in an open circuit, there is no path for current flow.

Question 9

In a parallel circuit, the total resistance is equal to the ____.&#10;A) reciprocal of the sum of the reciprocals of the branch resistances&#10;B) product of the resistors divided by the sum of the resistors when the circuit has two resistors&#10;C) value of one resistor divided by the number of resistors when the circuit contains two or more resistors of the same value&#10;D) all of the above&#10;E) b and c only

Accepted Answer

In a parallel circuit, the total resistance can be calculated using different methods depending on the specific conditions of the circuit. Option A describes the general formula for calculating total resistance in a parallel circuit, which applies universally. Option B provides a specific method for calculating total resistance when there are only two resistors in parallel, which is a simplification of the general formula. Option C describes how to calculate the total resistance when all resistors in the parallel circuit have the same value, which is another specific case of the general rule. Therefore, all these statements are correct ways to calculate total resistance in a parallel circuit under their respective conditions.

Question 10

When using Ohm's law to determine the applied voltage of a parallel circuit in which the value of the circuit amperage and resistance are known, the formula used would be ____.&#10;A) R = I * E&#10;B) I = E * R&#10;C) E = I * R&#10;D) I = E / R

Accepted Answer

Ohm's law states that voltage (E) is equal to the product of current (I) and resistance (R), E = I * R. Therefore, to determine the applied voltage of a parallel circuit when I and R are known, we would use the formula E = I * R.

Question 11

In a ____ circuit, the total resistance is the sum of the individual resistors.&#10;A) combination&#10;B) parallel&#10;C) series

Accepted Answer

The answer of In a ____ circuit, the total resistance...

Question 12

In a ____ circuit, the voltage across any circuit branch is the same as the total voltage.&#10;A) combination&#10;B) parallel&#10;C) series

Accepted Answer

The answer of In a ____ circuit, the voltage across...

Question 13

If a parallel circuit contains two resistors whose values are 30 ohms and 20 ohms, the total resistance of the circuit is ____ ohms.&#10;A) 25&#10;B) 12&#10;C) 1&#10;D) .83

Accepted Answer

The answer of If a parallel circuit contains two resistors...

Question 14

A ____ circuit contains elements of both series and parallel circuits.&#10;A) open&#10;B) parallel&#10;C) series&#10;D) none of the above

Accepted Answer

The answer of A ____ circuit contains elements of both...

Question 15

A section of a combination circuit composed of parallel resistors is called a ____.&#10;A) circuit adds&#10;B) resistor adds&#10;C) node&#10;D) parallel block

Accepted Answer

The answer of A section of a combination circuit composed...

Deck 7: Combination Circuits