MHT CET 2021 20th September Evening Shift | Current Electricity Question 79 | Physics

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]

will net change.

increase

decrease

become zero

MHT CET 2021 20th September Morning Shift

MCQ (Single Correct Answer)

-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

$$\frac{100}{19} \Omega$$

$$\frac{50}{19} \Omega$$

$$\frac{25}{19} \Omega$$

$$\frac{75}{19} \Omega$$

MHT CET 2021 20th September Morning Shift

MCQ (Single Correct Answer)

-0

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

MHT CET 2021 20th September Morning Shift Physics - Current Electricity Question 99 English

$$-\frac{7}{18}$$A

$$-3$$A

MHT CET 2020 19th October Evening Shift

MCQ (Single Correct Answer)

-0

A milliammeter of resistance $40 \Omega$ has a range $0-30 \mathrm{~mA}$. What will be the resistance used in series to convert it into voltmeter of range $0-15 \mathrm{~V}$ ?

$460 \Omega$

$920 \Omega$

$640 \Omega$

$560 \Omega$

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