1
AP EAPCET 2025 - 27th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

In the given circuit, the internal resistance of the cell is zero. If $i_1$ and $i_2$ are the readings of the ammeter when the key $(K)$ is opened and closed respectively, then $i_1: i_2=$

AP EAPCET 2025 - 27th May Morning Shift Physics - Current Electricity Question 1 English

A

$2: 1$

B

$3: 10$

C

$3: 5$

D

$1: 2$

2
AP EAPCET 2025 - 27th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

In a meter bridge, the null point is located at 20 cm from left end of the wire when resistances $R$ and $S$ are connected in the left and right gaps respectively. If the resistance $S$ is shunted with $60 \Omega$ resistance, the null point shifted by 5 cm , then the values of $R$ and $S$ are respectively

A

$24 \Omega, 6 \Omega$

B

$6 \Omega, 24 \Omega$

C

$5 \Omega, 20 \Omega$

D

$20 \Omega, 5 \Omega$

3
AP EAPCET 2025 - 27th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

If a wire of length ' $L$ ' carrying a current ' $i$ ' is bent in the shape of a semi-circular arc as shown in the figure, then the magnetic field at centre of the arc is

AP EAPCET 2025 - 27th May Morning Shift Physics - Moving Charges and Magnetism Question 1 English

A
$\frac{\pi \mu_0 i}{4 L}$
B
$\frac{\pi \mu_0 i}{2 L}$
C
$\frac{\mu_0{ }^j}{2 \pi L}$
D
$\frac{\mu_0 i}{4 \pi L}$
4
AP EAPCET 2025 - 27th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

A galvanometer having 30 divisions has a current sensitivity of $0.0625 \frac{d i \nu}{\mu A}$. If it is converted into a voltmeter to read a maximum of 6 V , then the resistance of that voltmeter is

A

$7.5 \mathrm{k} \Omega$

B

$12.5 \mathrm{k} \Omega$

C

$6 \mathrm{k} \Omega$

D

$5 \mathrm{k} \Omega$