3. If the magnet is cut into four equal parts such that their lengths
and breadths are equal. Pole strength of each part is ?
Answers
Answer:the pole strength will become 1/4th the original pole strength
Explanation:
Answer:
Explanation:
.1. The sphere of radii 8 cm and 2 cm are cooling. Their temperatures are 127^{°}C and 527^{°}C respectively. Find the ratio of energy radiated by them in the same time
2. Capacity of a capacitor is 48 μF. When it is charged from 0.1 C to 0.5, change in the energy stored is
3. In a parallel plate capacitor, the capacity increase if
4. The electric intensity outside a charged sphere of radius R at a distance r(r > R) is
Electric Charges And Fields
5. For a particle in SHM, if the amplitude of the
; displacement is a and the amplitude of velocity is v, the
; amplitude of acceleration is
6. The average acceleration of a particle performing SHM
; over one complete oscillation is
7. If the aperture of a telescope is decreases resolving power will
8. The velocity of 4 gas molecules are given by l km/s, 3 km/s, 5 km/s and 7 km/s. Calculate the different between average and rms velocity.
9. For measurement of potential difference, potentiometer is preferred in comparison to voltmeter because
10. When a resistance of 100 Ω is connected in series with a galvanometer of resistance R, its range is V. To double its range, a resistance of 1000Ω is connected in series.Find R.1