Magnetic Effects of Current and Magnetism-Ampere's Law (NEET Physics): Questions 8 - 10 of 10

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Question number: 8

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

MCQ▾

Question

charge moves in magnetic field B with velocity v making an angle θ with B. The force on the charge will be maximum if,

Choices

Choice (4) Response

a.

θ=450

b.

θ=1200

c.

θ=00

d.

θ=900

Question number: 9

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

MCQ▾

Question

An air-solenoid has 500 turns of wire in its 40 cm length. If the current in the wire be 1.0 ampere then the magnetic field on the axis inside the solenoid is –

Choices

Choice (4) Response

a.

1.57 gauss

b.

0.0157 gauss

c.

15.7 gauss

d.

0.157 gauss

Question number: 10

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

Appeared in Year: 2016

MCQ▾

Question

A long wire carrying a steady current is bent into a circular loop of one turn. The magnetic field at the centre of the loop is B . It is then bent into a circular coil of n turns. The magnetic field at the centre of this coil of n turns will be –

Choices

Choice (4) Response

a.

nB

b.

n2B

c.

2n2B

d.

2nB

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