Physics-Magnetism & Electricity at Work (NTSE Stage-2 (National-Level) Scholastic-Aptitude & Language Comprehension): Questions 1 - 3 of 10

Get 1 year subscription: Access detailed explanations (illustrated with images and videos) to 828 questions. Access all new questions we will add tracking exam-pattern and syllabus changes. View Sample Explanation or View Features.

Rs. 400.00 or

Question number: 1

» Physics » Magnetism & Electricity at Work

Appeared in Year: 2013

MCQ▾

Question

Consider a simple circuit containing a battery and three identical incandescent bulbs A, B and C. Bulb A is wired in parallel with bulb B and this combination is wired in series with bulb C. What would happen to the brightness of the other two bulbs if bulb A were to burn out?

Choices

Choice (4) Response

a.

Bulb B would get brighter and bulb C would get dimmer

b.

There would be no change in the brightness of either bulb B or bulb C

c.

A and B would get brighter

d.

Only bulb B would get brighter

Question number: 2

» 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: 3

» 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.

III<II<IIII

b.

II<III<IIII

c.

II=III=IIII

d.

II>III=IIII

Sign In