1. A Grandfather clock has a pendulum that completes a cycle of movement in 2.0 s. What is the frequency of vibration?

A. 0.2 Hz D. 2.0 Hz

B. 0.5 Hz E. 5.0 Hz

C. 1.0 Hz 2.

2. If the frequency of a wave is 10 Hz, it's period is:

A. 10s D. 0 .1s

B. 20 s E. None of the above

C. 100s

3.Consider the three circuits below:

In which of these circuits is the ammeter connected correctly to measure the current

through the two resistors?

A)	I only	C)	III only	E)	I, II, and III
B)	II only	D)	I and III only

4. What is the potential difference between two points in a circuit if 6.8J of work is done while supplying a current of 20mA for 2.0min?

A)	0.17 V	D)	6.0V
B)		E)
C)	2.8V

5. If two 8.0 resistors are connected in parallel in a circuit, their total resistance will be:

A)

0.13

B)

0.25

C)

4.0

D)

16

E)

64

6.. An 1200W hair dryer is plugged into a 120V wall socket. What current will it draw?

A)

10.0 A

B)

0.10 A

C)

144000 A

D)

1320.0 A

7. A toy truck uses a 6.0V battery. If the toy operates at a power of 150mW, what is its resistance?

A)

0.2

B)

4.2

C)

240.0

D)

40.0

1. In the circuit diagram below, V₁=2.5 V, V₂ = 5.0 V, V₅=4.0 V, I₃ = 0.050 A, I₄= 0.10 A, and

R₃ = 70.0. Solve the circuit. Use two significant digits. Use a table to summarize your results.

Be sure to solve For the current voltage, and resistance in every element, including the total.

R3 R2 R R5 RAP= 0. 40 W R1 = 10.0 0 12.0 V R3 RA = 15.0 0\f