1
MHT CET 2024 4th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

In a Wheatstone's bridge, the resistances in four arms are as shown in the figure. The balancing condition of the bridge is

MHT CET 2024 4th May Evening Shift Physics - Current Electricity Question 21 English

A
$\frac{\mathrm{P}}{\mathrm{Q}}=\frac{\mathrm{R}}{\mathrm{S}_1+\mathrm{S}_2}$
B
$\frac{P}{Q}=\frac{R\left(S_1 S_2\right)}{S_1+S_2}$
C
$\frac{P}{Q}=\frac{R\left(S_1+S_2\right)}{2 S_1 S_2}$
D
$\frac{\mathrm{P}}{\mathrm{Q}}=\frac{\mathrm{R}\left(\mathrm{S}_1+\mathrm{S}_2\right)}{\mathrm{S}_1 \mathrm{~S}_2}$
2
MHT CET 2024 4th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

When a galvanometer is shunted by a resistance ' $s$ ', its current capacity increases ' $n$ ' times. If the same galvanometer is shunted by another resistance ' $s_1$ ', its capacity will increase to ' $n_1$ ' times original current. The value of ' $n_1$ ' is

A
$\frac{(\mathrm{n}+\mathrm{s})}{\mathrm{s}_1}$
B
$\frac{s_1(n-s)-s_1}{s_1}$
C
$\frac{(n+1) s}{s_1}$
D
$\frac{\mathrm{s}(\mathrm{n}-1)+\mathrm{s}_1}{\mathrm{~s}_1}$
3
MHT CET 2024 4th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

In a meter bridge experiment, the balance point is obtained if the gaps are closed by $2 \Omega$ and $3 \Omega$. A shunt of $\mathrm{X} \Omega$ is added to $3 \Omega$ resistor to shift the null point by 22.5 cm. The value of ' $x$ ' is

A
$1 \Omega$
B
$2 \Omega$
C
$3 \Omega$
D
$4 \Omega$
4
MHT CET 2024 4th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

A potentiometer wire of length 1 m is connected in series with $495 \Omega$ resistance and 2 V battery. If $0.2 \mathrm{mV} / \mathrm{cm}$ is the potential gradient, then the resistance of the potentiometer wire is

A
$8 \Omega$
B
$6 \Omega$
C
$7 \Omega$
D
$5 \Omega$
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