JEE Main 2019 (Online) 11th January Evening Slot | Current Electricity Question 181 | Physics

JEE Main 2019 (Online) 11th January Evening Slot

MCQ (Single Correct Answer)

-1

An electric field of 1000 V/m is applied to an electric dipole at angle of 45^o. The value of electric dipole moment is 10^–29 C.m. What is the potential energy of the electric dipole?

- 7 $$ \times $$ 10^–27 J

$$-$$ 9 $$ \times $$ 10^–20 J

$$-$$ 10 $$ \times $$ 10^–29 J

$$-$$ 20 $$ \times $$ 10^–18 J

JEE Main 2019 (Online) 11th January Evening Slot

MCQ (Single Correct Answer)

-1

A galvanometer having a resistance of 20 $$\Omega $$ and 30 divisions on both sides has figure of merit 0.005 ampere/division. The resistance that should be connected in series such that it can be used as a voltmeter upto 15 volt, is:

120 $$\Omega $$

125 $$\Omega $$

80 $$\Omega $$

100 $$\Omega $$

JEE Main 2019 (Online) 11th January Evening Slot

MCQ (Single Correct Answer)

-1

A copper wire is wound on a wooden frame, whose shape is that of an equilateral triangle. If the linear dimension of each side of the frame is increased by a factor of 3, keeping the number of turns of the coil per unit length of the frame the same, then the self inductance of the coil:

decreases by a factor of $$9\sqrt 3 $$

increases by a factor of 27

decreases by a factor of 9

increases by a factor of 3

JEE Main 2019 (Online) 11th January Evening Slot

MCQ (Single Correct Answer)

-1

In the circuit shown, the potential difference between A and B is :

JEE Main 2019 (Online) 11th January Evening Slot Physics - Current Electricity Question 182 English