DC Voltage Question Preview (ID: 52884)


Circuit ,insulator Conductor. TEACHERS: click here for quick copy question ID numbers.

1- The bodies through which an electric current may pass called
a) a- Insulator
b) b- Conductor and Insulator
c) c- Conductor
d) none of the above choices

2- When the switch does not allow the current to pass, then the switch is:
a) a- Open
b) b- Closed
c) c- connected by nail
d) d- All the above choices

3- The important of the switch is:
a) a- Close the circuit
b) b- Open the circuit
c) c- Make the circuit effective
d) d- All the above choices

4- An incandescent lamp has:
a) a- Two terminals
b) b- One terminal
c) c- Three terminals
d) d- four terminals

5- The poles of the dry cell are:
a) a- Distinct poles
b) b- Unlike poles
c) c- positive and negative poles
d) d- All the above choices

6- A lamp of 5V functions normally under a voltage of :
a) 1- 9V
b) 2- 5V
c) 3- 12 V
d) 4- 3 V

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

Aluminum, nickel, and steel are examples of :
a) 1- Conducting materials.
b) 2-Insulating material
c) 3- Plastic materia
d) 4 –None of the above choices

Lamp lights when the circuit is
a) 1-Open
b) 2- closed
c) 3- Hasn't dry cell
d) 4- Lamp does't connect to dry cell

when we reverse the connections by dry cell, then the motor :
a) Rotate in same direction as before
b) Stops its rotation
c) Rotates in opposite direction
d) None of the above choices

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