State Ohm's Law.

In the given circuit the voltmeter reads 5V. The resistance of the voltmeter in Ohm is.

Consider an infinite grid with square cells. The resistance between two adjacent joints is $R.$ Find the net resistance $R_{net}$ of the whole grid between two points A & B.

Which of the units given below is the SI unit of resistance?

Write Ohm's law.

The resistance of rheostat shown in the figure is $0-30 \mathrm{\Omega }$, Neglecting the resistance of ammeter and connecting wire the minimum and maximum currents through the ammeter will be

The potential difference between the two ends of a conductor is $V$, and the current flowing through the conductor is $I$. At a constant temperature, which of the following statement is true for the conductor?

Write Ohm's law. Draw a circuit diagram to prove it experimentally in the laboratory.

Following figures shows graph of $I-V$. Which graph is correct according to Ohm's law?

In figure $R_1=10 \mathrm{\Omega }, R_{\mathit{2}}=40\mathit{ }\mathrm{\Omega }, R_3=30\mathit{ }\mathrm{\Omega }, R_4=20 \mathrm{\Omega }, {\mathrm{R}}_5=60 \mathrm{\Omega }$ and a $12 \mathrm{V}$ battery is connected to the arrangement. Calculate:

(a) Total resistance in the circuit.

(b) Total current flowing in the circuit.

Establish relation between potential difference $V$ and electric current $I$ by plotting graph.

How is the concept of resistance obtained from Ohm's law?