Physics-Magnetism & Electricity at Work (NTSE Stage-2 (National-Level) Scholastic-Aptitude & Language Comprehension): Questions 1 - 4 of 10

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Question number: 1

» Physics » Magnetism & Electricity at Work

Appeared in Year: 2013

MCQ▾

Question

Three rings P, Q and R are dropped at the same time over identical hollow magnets as shown below:

Three magnets and rings P, Q and R

Three Magnets and Rings P, Q and R

Three rings dropped on three hollow magnets

Which of the following describes the order in which the ring P, Q and R reach the bottom of the magnet?

Choices

Choice (4) Response

a.

Rings P and R arrive simultaneously, followed byQ.

b.

Rings Q and R arrive simultaneously, followed by P.

c.

They arrive in the order P, R, Q.

d.

They arrive in the order P, Q, R.

Question number: 2

» Physics » Magnetism & Electricity at Work

Appeared in Year: 2013

MCQ▾

Question

Three different circuits (I, II and III) are constructed using identical batteries and resistors of R and 2R ohm. What can be said about current I in arm AB of each circuit?

Three different circuits constructed using resistors

Three Different Circuits Constructed Using Resistors

Find the relation between current flowing from arm AB in each circuit

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

Question number: 3

» Physics » Magnetism & Electricity at Work

MCQ▾

Question

The pattern in which the iron filings will align, if a current carrying straight conductor is kept in the mid of iron filling, is

Choices

Choice (4) Response

a.

remain as such

b.

concentric circle

c.

zig-zag manner

d.

straight line

Question number: 4

» Physics » Magnetism & Electricity at Work

MCQ▾

Question

Two electromagnets shown in the figure above

Two Electromagnets Shown in the Figure Above

Both electromagnets consist of a coil of insulated wire wrapped around an iron core.

Both electromagnets (A) and (B) consist of a coil of insulated wire wrapped around an iron core. Then,

Choices

Choice (4) Response

a.

electromagnet (A) has more strength of magnetic field

b.

electromagnet (B) has more strength of magnetic field

c.

Data insufficient

d.

electromagnets (A) and (B) have same strength of magnetic field

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