1
WB JEE 2008
+1
-0.25

A battery of e.m.f. E and internal resistance r is connected to an external resistance R the condition for maximum power transfer is

A
r < R
B
r > R
C
r = 1/R
D
r = R
2
WB JEE 2008
+1
-0.25

A thin wire of resistance 4 $$\Omega$$ is bent to form a circle. The resistance across any diameter is

A
4 $$\Omega$$
B
2 $$\Omega$$
C
1 $$\Omega$$
D
8 $$\Omega$$
3
WB JEE 2024
+1
-0.25

Consider a circuit where a cell of emf $$E_0$$ and internal resistance $$\mathrm{r}$$ is connected across the terminal $$\mathrm{A}$$ and $$\mathrm{B}$$ as shown in figure. The value of $$\mathrm{R}$$ for which the power generated in the circuit is maximum, is given by

A
$$\mathrm{R}=\mathrm{r}$$
B
$$\mathrm{R}=2 \mathrm{r}$$
C
$$\mathrm{R}=3 \mathrm{r}$$
D
$$\mathrm{R}=\frac{\mathrm{r}}{3}$$
4
WB JEE 2023
+1
-0.25

In an experiment on a circuit as shown in the figure, the voltmeter shows 8 V reading. The resistance of the voltmeter is,

A
20 $$\Omega$$
B
320 $$\Omega$$
C
160 $$\Omega$$
D
1.44 k $$\Omega$$
EXAM MAP
Medical
NEET