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JEE Main 2024 (Online) 29th January Evening Shift
Numerical
+4
-1
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In the given circuit, the current flowing through the resistance $$20 \Omega$$ is $$0.3 \mathrm{~A}$$, while the ammeter reads $$0.9 \mathrm{~A}$$. The value of $$\mathrm{R}_1$$ is _________ $$\Omega$$.

JEE Main 2024 (Online) 29th January Evening Shift Physics - Current Electricity Question 28 English

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2
JEE Main 2023 (Online) 15th April Morning Shift
Numerical
+4
-1
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A network of four resistances is connected to $9 \mathrm{~V}$ battery, as shown in figure. The magnitude of voltage difference between the points $\mathrm{A}$ and $\mathrm{B}$ is __________ $V$.

JEE Main 2023 (Online) 15th April Morning Shift Physics - Current Electricity Question 70 English
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3
JEE Main 2023 (Online) 13th April Morning Shift
Numerical
+4
-1
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When a resistance of $$5 ~\Omega$$ is shunted with a moving coil galvanometer, it shows a full scale deflection for a current of $$250 \mathrm{~mA}$$, however when $$1050 ~\Omega$$ resistance is connected with it in series, it gives full scale deflection for 25 volt. The resistance of galvanometer is ____________ $$\Omega$$.

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4
JEE Main 2023 (Online) 13th April Morning Shift
Numerical
+4
-1
Change Language

A potential $$\mathrm{V}_{0}$$ is applied across a uniform wire of resistance $$R$$. The power dissipation is $$P_{1}$$. The wire is then cut into two equal halves and a potential of $$V_{0}$$ is applied across the length of each half. The total power dissipation across two wires is $$P_{2}$$. The ratio $$P_{2}: \mathrm{P}_{1}$$ is $$\sqrt{x}: 1$$. The value of $$x$$ is ___________.

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