Magnetic Effects of Current and Magnetism (AIIMS Physics): Questions 45 - 48 of 49

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Question number: 45

» Magnetic Effects of Current and Magnetism » Magnet Oscillations

MCQ▾

Question

A compass needle oscillates 10 times per minute at a place where dip is Equation and 30 times per minute where the dip is Equation . Compare the total magnetic field of earth at two places.

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

Question number: 46

» Magnetic Effects of Current and Magnetism » Ampere's Law

MCQ▾

Question

A current of Equation flows through two long parallel wires. The magnetic force on each wire is Equation If their currents makes doubled and separation between them makes Equation of initial value then magnetic force per unit length of each wire becomes –

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

Question number: 47

» Magnetic Effects of Current and Magnetism » Bar Magnet

MCQ▾

Question

The magnetic field at a distance Equation from a Equation long magnet, which has magnetic pole strength Equation , is –

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

Question number: 48

» Magnetic Effects of Current and Magnetism » Moving Coil Galvanometer

MCQ▾

Question

A galvanometer coil has a resistance of Equation and it shows full scale deflection for a current of Equation . Calculate the value of resistance required to convert it into an ammeter of range Equation .

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

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