MHT CET 2019 2nd May Evening Shift | Current Electricity Question 107 | Physics

With a resistance of ' $X$ ' in the left gap and resistance of $9 \Omega$ in the right gap of a meter bridge, the balance point is obtained at 40 cm from the left end. In what way and to which resistance $3 \Omega$ resistance be connected to obtain the balance at 50 cm from the left end?

In series with $9 \Omega$

Parallel to $X{\Omega}$

In series with $X \Omega$

Parallel to $9 \Omega$

MHT CET 2019 2nd May Morning Shift

MCQ (Single Correct Answer)

-0

In moving coil galvanometer, strong horse shoe magnet of concave shaped pole pieces is used to

increase space for rotation of coil

reduce weight of galvanometer

produce magnetic field which is parallel to plane of coil at any position

make magnetic induction weak at the centre.

MHT CET 2019 2nd May Morning Shift

MCQ (Single Correct Answer)

-0

For a metallic wire, the ratio of voltage to corresponding current is

independent of temperature.

increases with rise in temperature.

increases or decreases with rise in temperature depending upon the metal.

decreases with rise in temperature.

MHT CET 2019 2nd May Morning Shift

MCQ (Single Correct Answer)

-0

A galvanometer has resistance of $100 \Omega$ and a current of 10 mA produces full scale deflection in it. The resistance to be connected in series, to get a voltmeter of range 50 volt is

$3900 \Omega$

$4000 \Omega$

$4600 \Omega$

$4900 \Omega$

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