MCQ
A moving coil galvanometer can be converted into voltmeter by:
- Ajoining high resistor in parallel
- Bjoining low resistor in series
- ✓joining high resistor in series
- Djoining low resistor in parallel
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
An e.m.f. of 12 volt is produced in a coil when the current in it changes at the rate of 45 amp/minute. The inductance of the coil is
|
(a) 0.25 henry |
(b) 1.5 henry |
(c) 9.6 henry |
(d) 16.0 henry |

For the magnetic field to be maximum due to a small element of current carrying conductor at a point, the angle between the element and the line joining the element to the given point must be
|
(a) 0° |
(b) 90° |
(c) 180° |
(d) 45° |
A point object O is placed in front of a glass rod having spherical end of radius of curvature 30 cm. The image would be formed at
|
(a) 30 cm left |
(b) Infinity |
(c) 1 cm to the right |
(d) 18 cm to the left |