1
JEE Main 2023 (Online) 15th April Morning Shift
MCQ (Single Correct Answer)
+4
-1
For designing a voltmeter of range $50 \mathrm{~V}$ and an ammeter of range $10 \mathrm{~mA}$ using a galvanometer which has a coil of resistance $54 \Omega$ showing a full scale deflection for $1 \mathrm{~mA}$ as in figure.

(A) for voltmeter $R \approx 50 \mathrm{k} \Omega$
(B) for ammeter $\mathrm{r} \approx 0.2 \Omega$
(C) for ammeter $\mathrm{r}=6 \Omega$
(D) for voltmeter $R \approx 5 \mathrm{k} \Omega$
(E) for voltmeter $R \approx 500 \Omega$
Choose the correct answer from the options given below:

(A) for voltmeter $R \approx 50 \mathrm{k} \Omega$
(B) for ammeter $\mathrm{r} \approx 0.2 \Omega$
(C) for ammeter $\mathrm{r}=6 \Omega$
(D) for voltmeter $R \approx 5 \mathrm{k} \Omega$
(E) for voltmeter $R \approx 500 \Omega$
Choose the correct answer from the options given below:
2
JEE Main 2023 (Online) 15th April Morning Shift
MCQ (Single Correct Answer)
+4
-1
Given below are two statements:
Statement I : The equivalent resistance of resistors in a series combination is smaller than least resistance used in the combination.
Statement II : The resistivity of the material is independent of temperature.
In the light of the above statements, choose the correct answer from the options given below :
Statement I : The equivalent resistance of resistors in a series combination is smaller than least resistance used in the combination.
Statement II : The resistivity of the material is independent of temperature.
In the light of the above statements, choose the correct answer from the options given below :
3
JEE Main 2023 (Online) 13th April Morning Shift
MCQ (Single Correct Answer)
+4
-1
Different combination of 3 resistors of equal resistance $$\mathrm{R}$$ are shown in the figures. The increasing order for power dissipation is:

4
JEE Main 2023 (Online) 12th April Morning Shift
MCQ (Single Correct Answer)
+4
-1
A wire of resistance $$160 ~\Omega$$ is melted and drawn in a wire of one-fourth of its length. The new resistance of the wire will be
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