JEE Mains Evening 10th Jan Question Paper 2019 Physics Part 3 Download all the papers for 2019 Exam

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Q-6 A current of 2 mA was passed through an unknown resistor which dissipated a power of 4.4 W. dissipated power when an ideal power supply of 11 V is connected across it is:

Options:-

1.

2.

3.

4.

Answer: 1

Explanation:-

Power=4.4 W

Q-7 The diameter and height of a cylinder are measured by a meter scale to be and , respectively. What will be the value of its volume in appropriate significant figures?

Options:-

1.

2.

3.

4.

Answer: 1

Explanation:-

Q-8 At some location on earth the horizontal component of earth’s magnetic field is At this location, magnetic needle of length 0.12 m and pole strength 1.8 Am is suspended from its mid-point using a thread, it makes angle with horizontal in equilibrium. To keep this needle horizontal, the vertical force that should be applied at one of its ends is:

Options:-

1.

2.

3.

4.

Answer: 2

Explanation:-

- Image is define the some location on earth the horizontal component of earth's magnetic field.

Iamge of Magnetic Needle

- Image is define the some location on earth the horizontal component of earth's magnetic field.

Some location is

Length 0.12 m

Strength 1.8 Am

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