1
TS EAMCET 2022 (Online) 18th July Morning Shift
MCQ (Single Correct Answer)
+1
-0

TS EAMCET 2022 (Online) 18th July Morning Shift Physics - Capacitor Question 7 English

The following figure shows a 9 V battery and 3 uncharged capacitors of capacitances $C_1=C_2=C_3=1 \mu \mathrm{~F}$. The switch is thrown to the right side until capacitor $C_1$ is fully charged, then the switch is thrown to the left. The final charge on capacitor $C_2$ is

A

$1 \mu \mathrm{C}$

B

$2 \mu \mathrm{C}$

C

$3 \mu \mathrm{C}$

D

$4 \mu \mathrm{C}$

2
TS EAMCET 2022 (Online) 18th July Morning Shift
MCQ (Single Correct Answer)
+1
-0

A metal wire of length $L$ and radius $r$ has a resistance $R$. If a wire of the same metal of length $2 L$ and radius $3 r$ is taken, then what will be its resistance?

A

$\frac{2}{9} R$

B

$\frac{2}{3} R$

C

$\frac{2}{9 \pi} R$

D

$\frac{2}{3 \pi} R$

3
TS EAMCET 2022 (Online) 18th July Morning Shift
MCQ (Single Correct Answer)
+1
-0

Balancing point of a potentiometer shifts from a length of 60 cm to 40 cm by shunting the cell with a $4 \Omega$ resistance. What is the internal resistance of the cell?

A

$1 \Omega$

B

$2 \Omega$

C

$4 \Omega$

D

$6 \Omega$

4
TS EAMCET 2022 (Online) 18th July Morning Shift
MCQ (Single Correct Answer)
+1
-0

A current $I=5 \mathrm{~A}$ flows along a thin wire shaped as shown in figure. The radius of curved part of the wire is equal to $R=100 \mathrm{~mm}$, the angle $2 \phi=90^{\circ}$. The magnitude of magnetic field at the point $O$ is approximately

$$ \left(\text { use, } \frac{\mu_0}{4 \pi}=10^{-7} \mathrm{~T} \mathrm{~mA}^{-1}\right) $$

TS EAMCET 2022 (Online) 18th July Morning Shift Physics - Moving Charges and Magnetism Question 21 English

A

$33.6 \mu \mathrm{~T}$

B

$38.4 \mu \mathrm{~T}$

C

$48.7 \mu \mathrm{~T}$

D

$252 \mu \mathrm{~T}$

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