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DC Voltage
Test Description: Circuit ,insulator Conductor
Instructions: Answer all questions to get your test result.
1) 1- The bodies through which an electric current may pass called
A
a- Insulator
B
b- Conductor and Insulator
C
none of the above choices
D
c- Conductor
2) 2- When the switch does not allow the current to pass, then the switch is:
A
b- Closed
B
c- connected by nail
C
d- All the above choices
D
a- Open
3) 3- The important of the switch is:
A
d- All the above choices
B
a- Close the circuit
C
c- Make the circuit effective
D
b- Open the circuit
4) 4- An incandescent lamp has:
A
a- Two terminals
B
d- four terminals
C
c- Three terminals
D
b- One terminal
5) 5- The poles of the dry cell are:
A
a- Distinct poles
B
c- positive and negative poles
C
d- All the above choices
D
b- Unlike poles
6) 6- A lamp of 5V functions normally under a voltage of :
A
4- 3 V
B
3- 12 V
C
2- 5V
D
1- 9V
7) 7- To allow the passage of the electric current the Connecting wires must be
A
1- Insulator
B
2- Plastic
C
3- Conductors
D
4- Rubber
8) Aluminum, nickel, and steel are examples of :
A
2-Insulating material
B
4 –None of the above choices
C
1- Conducting materials.
D
3- Plastic materia
9) Lamp lights when the circuit is
A
3- Hasn't dry cell
B
1-Open
C
2- closed
D
4- Lamp does't connect to dry cell
10) when we reverse the connections by dry cell, then the motor :
A
Rotates in opposite direction
B
Rotate in same direction as before
C
None of the above choices
D
Stops its rotation
*select an answer for all questions
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