Physics-Magnetism & Electricity at Work [NTSE Stage-1 (State-Level) Scholastic-Aptitude & Language Comprehension]: Questions 19 - 24 of 47

Choose Programs:

🎯 1056 MCQs (& PYQs) with Full Explanations (2024-2025 Exam)

Rs. 450.00 -OR-

3 Year Validity (Multiple Devices)

CoverageDetailsSample Explanation

Help me Choose & Register (Watch Video) Already Subscribed?

Question 19

Question MCQ▾

The area enclosed by a hysteresis loop is a measure of

Choices

Choice (4)Response

a.

permeability

b.

retentivity

c.

susceptibility

d.

energy loss per cycle

Edit

Question 20

Question MCQ▾

Magnetic lines of force due to a bar magnet do not intersect because

Choices

Choice (4)Response

a.

the lines have similar charges and so repel each other

b.

the lines always diverge from a single point

c.

a point always has a single net magnetic field

d.

None of the above

Edit

Question 21

Question MCQ▾

Find the current in the given circuit

Series Circuit with Two Resister and Two Batteries

Choices

Choice (4)Response

a.

b.

c.

d.

None of the above

Edit

Question 22

Question MCQ▾

When the magnet is brought near the iron needle, it act as

Choices

Choice (4)Response

a.

non-magnetic material

b.

bar-magnetic

c.

temporary magnet

d.

None of the above

Edit

Question 23

Appeared in Year: 2013

Question MCQ▾

Three equal resistors connected in series across a source of emf dissipate 10 watts of power. What will be the power dissipated is watts if the same resistors are connected in parallel across the same source of emf?

Choices

Choice (4)Response

a.

10W

b.

12 W

c.

30W

d.

90W

Edit

Question 24

Appeared in Year: 2013

Question MCQ▾

An electric iron draws a current of 15 A from 220V supply. What is the cost of using iron for 30 min every day for 15 days if the cost of unit (1 unit = 1 KW/hr) is 2 rupees?

Choices

Choice (4)Response

a.

₹ 10

b.

₹ 60

c.

Rs49.5

d.

₹ 40

Edit