AIIMS (All India Institute of Medical Sciences) Physics: Questions 146 - 149 of 500

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Question number: 146

» Electromagnetic Induction & Alternating Currents » LCR Series Circuit

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Appeared in Year: 2005

MCQ▾

Question

A 50 Hz a. c. source of 20 volts is connected across R and C as shown in figure below. The voltage across R is 12 volts. The voltage across C is – [AIIMS]

RC series circuit diagram

RC Series Circuit Diagram

Choices

Choice (4)Response

a.

16V

b.

8 V

c.

Not possible to determine unless values of R and C are given

d.

10 V

Question number: 147

» Kinematics » Scalars and Vectors » Scalar and Vector Products

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MCQ▾

Question

The vector and are perpendicular to each other. The positive value of a is:

Choices

Choice (4)Response

a.

zero

b.

2

c.

3

d.

1

Question number: 148

» Magnetic Effects of Current and Magnetism » Electromagnets and Permanent Magnets

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Appeared in Year: 1999

MCQ▾

Question

When a magnetic substance is heated, then it – [AIIMS]

Choices

Choice (4)Response

a.

Does not affect the magnetism

b.

Becomes a strong magnet

c.

Losses its magnetism

d.

All of the above

Question number: 149

» Current Electricity » Electric Current

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Appeared in Year: 2004

MCQ▾

Question

Eels are able to generate current with biological cells called electro plaques. The electro plaques in an Eel are arranged in 100 rows, each row stretching horizontally along the body of the fish containing 5000 electro plaques. The arrangement is suggestively shown below. Each electro plaques have an emf of 0.15 V and internal resistance of 0.25 Ω. The water surrounding the Eel completes a circuit between the head and its tail. If the water surrounding it has a resistance of 500 Ω, the current an Eel can produce in water is about: - [AIIMS]

A circuit diagram with biological cell

A Circuit Diagram with Biological Cell

Choices

Choice (4)Response

a.

3.0 A

b.

15 A

c.

1.5 A

d.

30 A

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