# A circuit to verify Ohm’s law uses ammeter and voltmeter in series or parallel connected correctly to the resistor. In the circuit :

Question:

A circuit to verify Ohm’s law uses ammeter and voltmeter in series or parallel connected correctly to the resistor. In the circuit:

1. ammeter is always used in parallel and voltmeter is series

2. Both ammeter and voltmeter must be connected in parallel

3. ammeter is always connected in series and voltmeter in parallel

4. Both, ammeter and voltmeter must be connected in series

Correct Option: 3

Solution:

### Related Questions

• Consider four conducting materials copper, tungsten, mercury and aluminium with resistivity $\rho_{C}, \rho_{T}, \rho_{M}$ and $\rho_{A}$ respectively. Then :

View Solution

• To verify Ohm’s law, a student connects the voltmeter across the battery as, shown in the figure. The measured voltage is plotted as a function of the current, and the following graph is obtained :

If $\mathrm{V}_{\mathrm{o}}$ is almost zero, identify the correct statement:

View Solution

• A current of $5 \mathrm{~A}$ passes through a copper conductor (resistivity) $=1.7 \times 10^{-8} \Omega \mathrm{m}$ ) of radius of cross-section $5 \mathrm{~mm}$. Find the mobility of the charges if their drift velocity is $1.1 \times 10^{-3} \mathrm{~m} / \mathrm{s}$.

View Solution

• In an experiment, the resistance of a material is plotted as a function of temperature (in some range). As shown in the figure, it is a straight line.

One may canclude that:

View Solution

• Space between two concentric conducting spheres of radii $a$ and $b(b>a)$ is filled with a medium of resistivity $\rho$. The resistance between the two spheres will be :

View Solution

• In a conductor, if the number of conduction electrons per unit volume is $8.5 \times 10^{28} \mathrm{~m}^{-3}$ and mean free time is $25 f s$ (femto second), it’s approximate resistivity is $\left(\mathrm{m}_{0}=9.1 \times 10^{-31} \mathrm{~kg}\right)$

View Solution

• A $200 \Omega$ resistor has a certain color code. If one replaces the red color by green in the code, the new resistance will be :

View Solution

• The charge on a capacitor plate in a circuit, as a function of time, is shown in the figure:

What is the value of current at $\mathrm{t}=4 \mathrm{~s}$ ?

View Solution

• A resistance is shown in the figure. Its value and tolerance are given respectively by:

View Solution

• Drift speed of electrons, when $1.5 \mathrm{~A}$ of current flows in a copper wire of cross section $5 \mathrm{~mm}^{2}$, is $v$. If the electron density in copper is $9 \times 10^{28} / \mathrm{m}^{3}$ the value of $v$ in $\mathrm{mm} / \mathrm{s}$ close to (Take charge of electron to be $=1.6 \times 10^{-19} \mathrm{C}$ )

View Solution

error: Content is protected !!