1
MHT CET 2021 24th September Morning Shift
+1
-0

In a potentiometer experiement, when three cells $$\mathrm{A}, \mathrm{B}$$ and $$\mathrm{C}$$ are connected in series, the balancing length is found to be $$420 \mathrm{~cm}$$. If cells $$\mathrm{A}$$ and $$\mathrm{B}$$ are connected in series the balancing length is $$220 \mathrm{~cm}$$ and for cells $$\mathrm{B}$$ and $$\mathrm{C}$$ connected in series in balancing length is $$320 \mathrm{~cm}$$. The emf of cells $$\mathrm{A}, \mathrm{B}$$ and $$\mathrm{C}$$ are respectively in the ratio of

A
$$2: 3: 5$$
B
$$5: 4: 3$$
C
$$1: 1.2: 2$$
D
$$1.2: 1: 2$$
2
MHT CET 2021 23rd September Evening Shift
+1
-0

To determine the internal resistance of a cell by using a potentiometer, the null point is at $$1 \mathrm{~m}$$ when shunted by $$3 \Omega$$ resistance and at a length $$1.5 \mathrm{~m}$$, when cell is shunted by $$6 \Omega$$ resistance The internal resistance of the cell is

A
$$1 \Omega$$
B
$$4 \Omega$$
C
$$2 \Omega$$
D
$$6 \Omega$$
3
MHT CET 2021 23rd September Evening Shift
+1
-0

In the given circuit, the current in 8$$\Omega$$ resistance is 1.5 A. The total current (I) flowing in the circuit is

A
5 A
B
4.5 A
C
3 A
D
5.5 A
4
MHT CET 2021 23th September Morning Shift
+1
-0

A balanced bridge is shown in the circuit diagram. The metre bridge wire has resistance $$1 \Omega \mathrm{m}^{-1}$$. The current drawn from the battery is (Internal resistance of battery is negligible)

A
0.44 A
B
0.66 A
C
0.88 A
D
0.22 A
EXAM MAP
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