TS EAMCET 2022 (Online) 18th July Morning Shift | Current Electricity Question 49 | Physics

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?

$\frac{2}{9} R$

$\frac{2}{3} R$

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

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

TS EAMCET 2022 (Online) 18th July Morning Shift

MCQ (Single Correct Answer)

-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?

$1 \Omega$

$2 \Omega$

$4 \Omega$

$6 \Omega$

TS EAMCET 2020 (Online) 14th September Evening Shift

MCQ (Single Correct Answer)

-0

Find the equivalent resistance between point $A$ and $B$ in the following circuit. (The resistance of each resistor is $R$ )

TS EAMCET 2020 (Online) 14th September Evening Shift Physics - Current Electricity Question 1 English

$\frac{34}{55} R$

$\frac{45}{77} R$

$\frac{3}{5} R$

$\frac{5}{3} R$

TS EAMCET 2020 (Online) 14th September Evening Shift

MCQ (Single Correct Answer)

-0

In a meter bridge the balancing length from the left end is found to be 25 cm . The value of the unknown resistance is (assume, standard resistance of $1 \Omega$ is in the right gap)

$0.25 \Omega$

$0.33 \Omega$

$0.20 \Omega$

$0.50 \Omega$

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