NEET Physics: Questions 722 - 724 of 2098

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Question number: 722

» Electromagnetic Induction & Alternating Currents » Peak and RMS Value of AC

MCQ▾

Question

The r. m. s. value of an ac of 50 Hz is 10 A.

(1) Time taken by the alternating current in reaching from zero to maximum value is 5 x 10 -3 sec

(2) Time taken by the alternating current in reaching from zero to maximum value is 2 x 10 -3 sec

(3) The peak current is 14.14 A

(4) The peak current is 7.07 A

Select the correct answers and mark it according to the following codes:

Choices

Choice (4) Response

a.

1, 2 and 3 are correct

b.

1 and 3 are correct

c.

1 and 2 are correct

d.

2 and 4 are correct

Question number: 723

» Experimental Skills » Screw Gauge

MCQ▾

Question

A T shaped object, dimensions shown in the figure, a1 lying on a smooth floor. A force ‘F is applied at the poi: P parallel to AB, such that the object has only the translational motion without rotation. Find the location of P with respect to C

Object on smooth floor - location of P with respect to C

Object on Smooth Floor - Location of P With Respect to C

Here in above figure we show the object AB on the smooth floor and force f apply.

Choices

Choice (4) Response

a.

23l

b.

32l

c.

I

d.

43l

Question number: 724

» Electromagnetic Induction & Alternating Currents » Faraday's Law

MCQ▾

Question

A rectangular coil of size 10 cm x 20 cm has 60 turns. It is rotating about one of its diagonals in magnetic field 0.5 Wb/m 2 with a rate of 1800 revolution per minute. The induced e. m. f. in the coil can be,

(1) 111 V (2) 112 V

(3) 113 V (4) 114 V

Select the correct answers and mark it according to the following codes:

Choices

Choice (4) Response

a.

2 and 4 are correct

b.

1 and 3 are correct

c.

1, 2 and 3 are correct

d.

1 and 2 are correct

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