Question 1 A circuit consists of two opposing voltage sources: a V A of 11 V and

Question

Question 1

A circuit consists of two opposing voltage sources: a VA of 11 V and a VB of 8 V. There are three resistors: an R1 of 29 ?, an R2 of 14 ?, and an R3 of 9 ?. One end of R1 is connected to the + side of VA while one end of R2 is connected to the + side of VB. The remaining leads of R1 and R2 are connected together along with one end of R3. The other end of R3 is connected to the negative end of both VA and VB. The voltage across R1 is

Question 1 options:

6.62 V

8.25 V

11.9 V

5.37 V

Question 2

A 12-V voltage source with an internal resistance (RS) of 300 ? is connected to a 60 ? load (RL). The voltage drop across the load (VL) is

Question 2 options:

6 V

2 V

8 V

12 V

Question 3

Three resistors are in series across a 15-V source: R1 = 22 ?, R2 = 120 ?, and R3 = 380 ?. A load resistor is placed across R3. The value of VTH for the circuit is

Question 3 options:

15 V

4.1 V

10.92 V

0 V

Question 4

Two resistors are in parallel, an R2 of 140 ? and an R3 of 470 ?. The two parallel resistors are in turn in series with a resistor, R1, of 220 ?. One side of R1 is connected to the positive terminal of a 9-V source. The other side is connected to the parallel circuit. The load, RL, is taken off of R3. What is the Thevenin equivalent for the circuit?

Question 4 options:

VTH = 2.96 V, RTH = 72.38 ?

VTH = 2.96 V, RTH = 108 ?

VTH = 6.04 V, RTH = 140 ?

VTH = 9 V, RTH = 470 ?

Question 5

A maximum power transfer occurs when the load resistance

Question 5 options:

equals the source resistance

is less than the source resistance

is zero

exceeds the source resistance

Question 6

A bar magnet has fourteen lines of force cutting two square centimeters (2 cm2). Assuming that each line of force represents 50 ?Wb of flux, the flux density for the magnet is

Question 6 options:

0.35 T

0.0035 T

35 T

3.5 T

Question 7

If an iron bar has a value of ?r = 300, and the flux density in the space surrounding the bar equals 3

6.62 V

8.25 V

11.9 V

5.37 V

Explanation / Answer

1)a

2) b

3) c

4) a

5) a

6) a

7) c

8) a

9) d

10) a

11) a

12) a

13) b

14) c

15) b

16) a

17) d

18) d

19) d

20) c

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