Question
What do you understand by sensitivity and efficiency of a galvanometer? On which factors does it depend?
✓
Answer
SELF
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
A particle of mass m and charge (–q) enters the region between the two charged plates initially moving along x-axis with speed vx (like particle 1 in Fig. 1.33). The length of plate is L and an uniform electric field E is maintained between the plates. Show that the vertical deflection of the particle at the far edge of the plate is qEL2 /(2m v2 x).
Compare this motion with motion of a projectile in gravitational field discussed in Section 4.10 of Class XI Textbook of Physics.
Compare this motion with motion of a projectile in gravitational field discussed in Section 4.10 of Class XI Textbook of Physics.
Consider the situation shown in figure. The system is released from rest and the block of mass 1.0kg is found to have a speed 0.3m/s after it has descended through a distance of 1m. Find the coefficient of kinetic friction between the block and the table.
Establish an expression for force on a current carrying conductor kept in a magnetic field. Explain right hand palm rule for the direction of force.
A container of volume 50cc contains air (mean molecular weight = 28.8g) and is open to atmosphere where the pressure is 100kPa. The container is kept in a bath containing melting ice (0°C).
- Find the mass of the air in the container when thermal equilibrium is reached.
- The container is now placed in another bath containing boiling water (100°C). Find the mass of air in the container.
- The container is now closed and placed in the melting-ice bath. Find the pressure of the air when thermal equilibrium is reached.
The half-life of 40K is 1.30 × 109y. A sample of 1.00g of pure KCI gives 160 counts/ s. Calculate the relative abundance of 40K (fraction of 40K present) in natural potassium.
$\text{ }^{212}_{33}\text{Bi}$ can disintegrate either by emitting an $\alpha$-particle of by emitting a $\beta^-$-particle.
→- Write the two equations showing the products of the decays.
- The probabilities of disintegration $\alpha$ and $\beta$ -decays are in the ratio $\frac{7}{13}.$ The overall half-life of 212Bi is one hour. If 1g of pure 212Bi is taken at 12.00 noon, what will be the composition of this sample at 1P.m. the same day?
An LR circuit with emf $\in$ is connected at t = 0.
→- Find the charge Q which flows through the battery during 0 to t.
- Calculate the work done by the battery during this period.
- Find the heat developed during this period.
- Find the magnetic field energy stored in the circuit at time t.
- Verify that the results in the three parts above are consistent with energy conservation.
Figure. shows a conductor of length l with a circular cross-section. The radius of the cross-section varies linearly from a to b. The resistivity of the material is ρ. Assuming that b - a << l, find the resistance of the conductor.
Study the circuits (a) and (b) shown in Fig. and answer the following questions.
- Under which conditions would the rms currents in the two circuits be the same?
- Can the rms current in circuit (b) be larger than that in (a)?
In beta decay, an electron (or a positron) is emitted by a nucleus. Does the remaining atom get oppositely charged?