| 1 |
In order to increase sensitivity of galvanometer the value of C may be |
- A. Increase
- B. Decrease
- C. Neither increase nor decrease
- D. Remain same
|
| 2 |
The sensitivity of galvanometer directly depends upon |
- A. Magnetic field
- B. Area of coil
- C. Both a and b
- D. None of a, b, c
|
| 3 |
Which one of the following resistance is used to convert a Galvanometer into an ammeter. |
- A. High resistance
- B. Low resistance in series with galvanometer
- C. Shunt
- D. High resistance in series with galvanometer
|
| 4 |
Magnetic lines of force are. |
- A. Imaginary
- B. Real
- C. Perpendicular
- D. In phase with electric lines of force
|
| 5 |
The anodes in cathode ray oscilloscope. |
- A. Control number of waves
- B. Control brightness of sept formed
- C. Accelerate as well as focus beam
- D. Negative potential w.r.t to chithode
|
| 6 |
Lorentz force means the force acting on a particle, which is |
- A. Magnetic force only
- B. Electric force only
- C. Sum of electric and magnetic force
- D. None of these
|
| 7 |
The SI unit of magnetic induction 'B' Tesla is equal to. |
- A. NA-1m-1
- B. Nam-1
- C. NA-1 m
- D. Na2m-1
|
| 8 |
When charge particle enter perpendicular to magnetic field, the path followed by it is: |
- A. A helix
- B. A circle
- C. Straight line
- D. Ellipes
|
| 9 |
Galvanometer is sensitive when C/BAN is |
- A. zero
- B. Large
- C. small
- D. Negative
|
| 10 |
The galvanometer can be made sensitive by making the factor BAN/C |
- A. Large
- B. Small
- C. Constant
- D. Zero
|