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

Find the current in the three resistors as shown in the following figure?

TS EAMCET 2022 (Online) 18th July Evening Shift Physics - Current Electricity Question 22 English

A

$i_1=0, i_2=\frac{4 V}{R}, i_3=\frac{2 V}{R}$

B

$i_1=0, i_2=0, i_3=0$

C

$i_1=0, i_2=\frac{2 V}{R}, i_3=\frac{4 V}{R}$

D

$i_1=0, i_2=\frac{2 V}{R}, i_3=\frac{2 V}{R}$

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

The resistivity of a material is found to be $10^8 \Omega-\mathrm{m}$, then the material would be

A

Only insulator

B

Only metal

C

Only semiconductor

D

Only Superconductor

3
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

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

4
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

$6 \Omega$

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