Premium Essay

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In: Business and Management

Submitted By fdf123
Words 777
Pages 4
/20
L
L
L

K/ U
T
C
A

Electricity Unit Test

Knowledge and Understanding
1. Answer all multiple choice questions here:
Question
1
2

Name: ________________

3

4

5

6

7

8

9

10

2. Answer all matching questions here by writing the correct LETTE
R:
Question
1
2
3
4
5

6

7

8

9

10

Answer

Answer
1.

c) ohm (Ω)
a)
b)
c)
d)

2.
a)
b)
c)
d)
3. Which is not one of the essential components of any circuit a) Switch
b) Insulator
c) Conductor
d) Load
4. Akettle uses 6000 Jof electrical energy to produce
4500 Jof thermal energy. What is its efficiency?
a) 75%
b) 0.75%
c) 1.33%
d) Cannot be determined
5.
a)
b)
c)
d)
6. The unit of current is the:
a) ampere (A)
b) volt (V)

7. Which of the following is NOT true for a series circuit
a) There is more than one path for electrons to flow b) The current is the same throughout the circuit c) The voltage drops from load to load
d) The resistance increases as more loads are added 8. If 5A of current flows through a load which experiences a 10V drop in potential difference, what is the resistance of the load?
a) 0.5 Ω
b) 2Ω
c) 50 Ω
d) None of the above
9. Which does not affect the resistance in a conductor
a) Temperature
b) Cross-Sectional Area
c) Type of Material
d) They all affect resistance in a conductor
10.
a)
b)
c)
d)

Matching
1.

A.

2.

B. Must be connected in parallel

3. Circuit

C. Relates resistance to voltage and current

4.

D.

5. Ammeter

E.

6. Ohm’Law s F. Must be connected in series

7.

G.

8.

H. Continuous path that allows current flow

9.

I.

10. Voltmeter

J.

Thinking
1. Draw a fully labeled circuit diagram in the space below including the following components:
· A 3 cell battery
· A voltmeter connected across the first bulb
· 4 light bulbs

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