1
JEE Main 2022 (Online) 28th June Evening Shift
Numerical
+4
-1
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All resistances in figure are 1 $$\Omega$$ each. The value of current 'I' is $${a \over 5}$$ A. The value of a is _________.

JEE Main 2022 (Online) 28th June Evening Shift Physics - Current Electricity Question 122 English

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2
JEE Main 2022 (Online) 28th June Morning Shift
Numerical
+4
-1
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A meter bridge setup is shown in the figure. It is used to determine an unknown resistance R using a given resistor of 15 $$\Omega$$. The galvanometer (G) shows null deflection when tapping key is at 43 cm mark from end A. If the end correction for end A is 2 cm, then the determined value of R will be ____________ $$\Omega$$.

JEE Main 2022 (Online) 28th June Morning Shift Physics - Current Electricity Question 119 English

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3
JEE Main 2022 (Online) 28th June Morning Shift
Numerical
+4
-1
Change Language

Current measured by the ammeter (A) in the reported circuit when no current flows through 10 $$\Omega$$ resistance, will be ________________ A.

JEE Main 2022 (Online) 28th June Morning Shift Physics - Current Electricity Question 120 English

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4
JEE Main 2022 (Online) 27th June Evening Shift
Numerical
+4
-1
Change Language

The current density in a cylindrical wire of radius r = 4.0 mm is 1.0 $$\times$$ 106 A/m2. The current through the outer portion of the wire between radial distances $${r \over 2}$$ and r is x$$\pi$$ A; where x is __________.

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