Lab quiz 7

The positive terminals of the two voltage sources, V1 = 10 V and V2=20 V are connected in series with a 20 k ohm and 10 k ohm resistors. The negative terminals of both the voltage sources are interconnected through a 30 k ohm resistor. Determine the magnitude of the voltage at the 20 k ohm resistor.

10/3V

Four 1.5 V AA batteries in series are used to power a transistor radio. If the batteries hold a total charge of 240.0 C, how long will they last if the radio has a resistance of 200.0 ohms?

2.2 hrs

What is the maximum number of 100 Watt lightbulbs you can connect in parallel in a 120 V home circuit without tripping the 20 A circuit breaker?

23

The positive terminals of the two voltage sources, V1 = 10 V and V2=20 V are connected in series with a 20 k ohm and 10 k ohm resistors. The negative terminals of both the voltage sources are interconnected through a 30 k ohm resistor. Determine the magnitude of the voltage at the 10 k ohm resistor.

5/3 V

Two resistors R1 ohms and R2 ohms are connected in series with a voltage source of Vs. The current flowing through Vs is Is, R1 is I1 and R2 is I2. The potential drop across R1 is V1 and R2 is V2. Which of the following statements is true?

Both A and B

In a loop in a closed circuit, the sum of the currents entering a junction equals the sum of the currents leaving a junction because

Charge is neither created nor destroyed in a junction

KCL is used when solving circuits with

Closed Loops

Two resistors R1 ohms and R2 ohms are connected in parallel with a voltage source of Vs. The current flowing through Vs is Is, R1 is I1 and R2 is I2. The potential drop across R1 is V1 and R2 is V2. Which of the following statements is true?

Is - I1 - I2 = 0

Nodal Analysis applies the following principles

KCL and OHM's law

Which of the following statements is most accurate?

KVL is concerned with voltage drops

Single loop circuits can be analyzed by using_______

Kirchhoff's voltage Law

A _____ is defined as a place where two or more components are connected

Node

What is the significance of a negative sign from a calculation when solving circuit problems?

Real resulting current or voltage is in the opposite direction to one assumed

According to Kirchhoff's first law, in a given circuit

The sum of the magnitudes of the currents entering any node is equal to the sum of the magnitudes of the currents leaving that node

According to Kirchhoff's second/voltage law, the algebraic sum of

The voltages around a closed loop equals zero

Two resistors R1 ohms and R2 ohms are connected in parallel with a voltage source of Vs. The current flowing through Vs is Is, R1 is I1 and R2 is I2. The potential drop across R1 is V1 and R2 is V2. Which of the following statements is true?

V1-V2=0

Two resistors R1 ohms and R2 ohms are connected in series with a voltage source of Vs. The current flowing through Vs is Is, R1 is I1 and R2 is I2. The potential drop across R1 is V1 and R2 is V2. According to Kirchhoff's Voltage Law, which of the following statements is true?

Vs - V1 - V2 = 0

The algebraic sum of charges of potential around any closed circuit path is

Zero

According to Kirchhoff's first law, when current divides at a junction the

algebraic sum of currents at the junction equal zero

A ______ in the network is any closed path through two or more elements of the network

loop

According to kirchhoff's second law, in a given circuit

the sum of the voltages about a closed path equals the sum of voltage supplied by the sources in that path

in general a series circuit divides ____ proportionally while a parallel circuit divides_____ proportionally

voltage......current