NEET Physics: Questions 766 - 770 of 2098

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Passage

Read the passage given below and answer the questions that follow:

If the voltage in an a c circuit is represented by the eq. , V=2202sin(314tΦ) , then

Question number: 766 (1 of 3 Based on Passage) Show Passage

» Electromagnetic Induction & Alternating Currents » Alternating Currents

MCQ▾

Question

Frequency of ac is

Choices

Choice (4) Response

a.

502Hz

b.

50 Hz

c.

75 Hz

d.

503Hz

Question number: 767 (2 of 3 Based on Passage) Show Passage

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

MCQ▾

Question

Average voltage is

Choices

Choice (4) Response

a.

2002V

b.

2202V

c.

622πV

d.

220 V

Question number: 768 (3 of 3 Based on Passage) Show Passage

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

MCQ▾

Question

RMS value of the voltage is

Choices

Choice (4) Response

a.

2002V

b.

314 V

c.

2202V

d.

220 V

Question number: 769

» Laws of Motion » Force and Inertia

MCQ▾

Question

A block of mass M is pulled along a horizontal frictionless surface by a rope of mass m. If a force P is applied at the free end of the rope, the force exerted by the rope on the block will be

Choices

Choice (4) Response

a.

P

b.

PmM+m

c.

mPM+m

d.

MPM+m

Question number: 770

» Magnetic Effects of Current and Magnetism » Biot - Savart Law

MCQ▾

Question

A current i is flowing in a conductor PQRST shaped as shown in the figure. The radius of curved part QRS is r and length of straight portions PQ and ST is very large. The magnetic field at the center O of the curved part is –

current flowing conductor PQRST

Current Flowing Conductor PQRST

A current i is flowing in a conductor PQRST shaped as shown in the figure. The radius of curved part QRS is r and length of straight portions PQ and ST is very large.

Choices

Choice (4) Response

a.

μ0i4πr[3π21](k^)

b.

μ0i4πr[3π2+1](k^)

c.

μ0i4πr[3π21]k^

d.

μ0i4πr[3π2+1]k^

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