1
NEET 2022 Phase 1
MCQ (Single Correct Answer)
+4
-1
A copper wire of length 10 m and radius $$\left( {{{{{10}^{ - 2}}} \over {\sqrt \pi }}} \right)$$ m has electrical resistance of 10 $$\Omega$$. The current density in the wire for an electric field strength of 10 (V/m) is
2
NEET 2022 Phase 1
MCQ (Single Correct Answer)
+4
-1
A wheatstone bridge is used to determine the value of unknown resistance X by adjusting the variable resistance Y as shown in the figure. For the most precise measurement of X, the resistance P and Q
3
NEET 2021
MCQ (Single Correct Answer)
+4
-1
In a potentiometer circuit a cell of EMF 1.5 V gives balance point at 36 cm length of wire. If another cell of EMF 2.5 V replaces the first cell, then at what length of the wire, the balance point occurs?
4
NEET 2021
MCQ (Single Correct Answer)
+4
-1
The effective resistance of a parallel connection that consists of four wires of equal length, equal area of cross-section and same material is 0.25$$\Omega$$. What will be the effective resistance if they are connected in series?
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