NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics: Questions 787 - 791 of 2320

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Question number: 787

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

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MCQ▾

Question

In a circuit, the value of alternating current is measured by hot wire ammeter as 10 ampere. Its peak value will be

Choices

Choice (4)Response

a.

7.07 A

b.

14.14 A

c.

10 A

d.

20 A

Question number: 788

» Laws of Motion » Force and Inertia

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MCQ▾

Question

Two blocks of mass m = 1 kg and M = 2 kg are in contact on a frictionless table. A horizontal force F (= 3N) is applied to m. The force of contact between the blocks, will be

Choices

Choice (4)Response

a.

5N

b.

2N

c.

IN

d.

4N

Question number: 789

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

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MCQ▾

Question

The peak value of an alternating e. m. f. E given by E = E 0 cos t is 10 volts and its frequency is 50 Hz. At time , the instantaneous e. m. f. is

Choices

Choice (4)Response

a.

10 V

b.

5 V

c.

1 V

d.

Question number: 790

» Electromagnetic Induction & Alternating Currents » AC Generator and Transformer

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MCQ▾

Question

A transformer has turn ratio 100: 1. If secondary coil has 4 amp current then current in primary coil is

Choices

Choice (4)Response

a.

0.4 A

b.

400 A

c.

4 A

d.

0.04 A

Question number: 791

» Electromagnetic Induction & Alternating Currents » Reactance and Impedance

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MCQ▾

Question

An inductor (L = 100 mH), a resistor (R = 100Ω) and a battery (E = 100 V) are initially connected in series as shown in the figure. After a long time the battery is disconnected after short circuiting the points A and B. The current in the circuit 1 ms after the short circuit is

Circuit diagram consist of inductor, resistor and battery

Circuit Diagram Consist of Inductor, Resistor and Battery

Choices

Choice (4)Response

a.

0.1 A

b.

c.

e A

d.

1 A

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