1
MHT CET 2021 20th September Evening Shift
+1
-0

In potentiometer experiment, null point is obtained at a particular point for a cell on potentiometer wire '$$\mathrm{x}$$' cm long. If length of potentiometer wire is increased by few centimeter without changing the cell, the balancing length will [Driving source is not changed]

A
will net change.
B
increase
C
decrease
D
become zero
2
MHT CET 2021 20th September Morning Shift
+1
-0

A galvanometer of resistance $$50 \Omega$$ is converted to an ammeter. After shunting, the effective resistance of ammeter is $$2.5 \Omega$$. The value of shunt is

A
$$\frac{100}{19} \Omega$$
B
$$\frac{50}{19} \Omega$$
C
$$\frac{25}{19} \Omega$$
D
$$\frac{75}{19} \Omega$$
3
MHT CET 2021 20th September Morning Shift
+1
-0

Consider the circuit shown in the figure. The value of current 'I' is

A
$$-\frac{7}{18}$$A
B
5A
C
3A
D
$$-3$$A
4
MHT CET 2020 16th October Morning Shift
+1
-0

An ammeter of resistance $$20 \Omega$$ gives full scale deflection, when $$1 \mathrm{~mA}$$ current flows through it. What is the maximum current that can be measured by connecting 4 resistors each of $$16 \Omega$$ in parallel with the ammeter?

A
6 mA
B
4 mA
C
8 mA
D
2 mA
EXAM MAP
Medical
NEET