Question
Why a galvanometer is not used as an ammeter in the same form?
✓
Answer
Because the resistance of its coil is not very less and it can measure current corresponding to maximum possible deflection in the coil.
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
Find the ratio of the weights, as measured by a spring balance, of a 1kg block of iron and a 1kg block of wood. Density of iro = 7800Kg/m3 density of wood = 800kg/m3 and density of air = 1.293kg/m3.
Write the expression for speed of electromagnetic waves in a medium of electrical permittivity $\in$ and magnetic permeability $\mu$.
→What is the static-electric potential due to an electric dipole at an intermediate point?
Answer carefully:
If Coulomb’s law involved $\frac{1}{\text{r}^{3}}$ dependence $(\text{instead of}\ \frac{1}{\text{r}^{2}})$, would Gauss’s law be still true?
→If Coulomb’s law involved $\frac{1}{\text{r}^{3}}$ dependence $(\text{instead of}\ \frac{1}{\text{r}^{2}})$, would Gauss’s law be still true?
The instantaneous magnitudes of current and voltage in an ac circuit are given as $I =10 \sin 314 t A$ and $V =50 \sin \left(314 t +\frac{\pi}{2}\right) \quad V$ respectively. What is the dissipation of average power in the circuit?
→Two capacitors of equal capacitance C are combine in series. What will be the capacitance of the combination?
A point charge Q is placed at point ‘O’ as shown in the figure. Is the potential at point A, i.e. VA, greater, smaller or equal to potential, VB, at point B, when Q is (i) positive, and (ii) negative charge?
A resistance R is connected across a cell of emf ε and internal resistance r. A potentiometer now measures the potential difference between the terminals of the cell as V. Write the expression for 'r' in terms of ε, V and R.
In what way is the behaviour of a diamagnetic material different from that of a paramagnetic, when kept in an external magnetic field.
A gas is kept in an enclosure. The pressure of the gas is reduced by pumping out some gas. Will the temperature of the gas decrease by Charles's law?