| 1 |
A microphone converts mechanical wave energy into. |
- A. Video signals
- B. Ausio and video signals
- C. Audio signals
- D. None of these
|
| 2 |
On ampere is equal to. |
- A. 100 mA
- B. 10 mA
- C. 1000 mA
- D. 10000 mA
|
| 3 |
The formula of find the magnitude of current is. |
- A. I = Q/t
- B. I = QV
- C. I = CV
- D. I = C/Q
|
| 4 |
The best material to be used as a core in the coils for making electromagnet is. |
- A. Rubber
- B. Plastic
- C. Soft Iron
- D. Steel
|
| 5 |
One milli ampere is equal to. |
- A. 100 micro Ampire
- B. 1000 micro Ampire
- C. 10 micro Ampire
- D. 1 micro Ampire
|
| 6 |
Our electricity bill is taken in. |
- A. Wh
- B. kWh
- C. micro Wh
- D. m Wh
|
| 7 |
An electric circuit is the path along whihc. |
- A. Electron revolve around the nucleus of an atom
- B. Electric charge flows.
- C. Magnetic lines of force move
- D. Electric motors move
|
| 8 |
An electric current in a conductor is ude to the flow of. |
- A. Positive ions
- B. Negative ions
- C. Positive charge
- D. Free electrons
|
| 9 |
Which of the following is non-magnetic substace |
- A. iron
- B. Steel
- C. Silver
- D. Nickel
|
| 10 |
The relation R = V/I is discovered by a |
- A. American scientist
- B. German scientist
- C. British Scientis
- D. Russian scientist
|
