JEE Main 2019 (Online) 12th April Morning Slot | Current Electricity Question 222 | Physics

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 : JEE Main 2019 (Online) 12th April Morning Slot Physics - Current Electricity Question 220 English

JEE Main 2019 (Online) 12th April Morning Slot Physics - Current Electricity Question 220 English

If V₀ is almost zero, identify the correct statement :

The value of the resistance R is 1.5 $$\Omega $$

The emf of the battery is l.5 V and its internal resistance is 1.5 $$\Omega $$

The emf of the battery is l.5 V and the value of R is 1.5 $$\Omega $$

The potential difference across the battery is 1.5 V when it sends a current of 1000 mA

JEE Main 2019 (Online) 10th April Evening Slot

MCQ (Single Correct Answer)

-1

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 :

$${\rho \over {2\pi }}\left( {{1 \over a} + {1 \over b}} \right)$$

$${\rho \over {4\pi }}\left( {{1 \over a} + {1 \over b}} \right)$$

$${\rho \over {2\pi }}\left( {{1 \over a} - {1 \over b}} \right)$$

$${\rho \over {4\pi }}\left( {{1 \over a} - {1 \over b}} \right)$$

JEE Main 2019 (Online) 10th April Morning Slot

MCQ (Single Correct Answer)

-1

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

1.3 m²/Vs

1.0 m²/Vs

1.8 m²/Vs

1.5 m²/Vs

JEE Main 2019 (Online) 10th April Morning Slot

MCQ (Single Correct Answer)

-1

In a meter bridge experiment, the circuit diagram and the corresponding observation table are shown in figure JEE Main 2019 (Online) 10th April Morning Slot Physics - Current Electricity Question 227 English