Electric Current and Its Effects [CBSE (Central Board of Secondary Education) Class-7 Science]: Questions 1 - 6 of 17

Choose Programs:

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

Rs. 250.00 -OR-

3 Year Validity (Multiple Devices)

CoverageDetailsSample Explanation

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

Question 1

Appeared in Year: 2016

Question MCQ▾

A simple circuit consists of a:

Choices

Choice (4)Response

a.

Cell and switch

b.

Cell, bulb and a switch

c.

Conductor, cell and switch

d.

Battery, conductor and switch

Edit

Question 2

Question MCQ▾

Springy metal strip in an electric bell is used to:

Choices

Choice (4)Response

a.

Adjust the contact between metal strip and mains

b.

Produce sound

c.

Making and breaking the contacts

d.

Question does not provide sufficient data or is vague

Edit

Question 3

Question MCQ▾

Needle of a compass always points towards the:

Choices

Choice (4)Response

a.

South-South direction

b.

North-South direction

c.

North-North direction

d.

South-North direction

Edit

Question 4

Question MCQ▾

Electromagnets are used in:

Choices

Choice (4)Response

a.

Used in industry and municipalities

b.

For separating iron from non-magnetic materials

c.

Modern electrical devices

d.

All a., b. and c. are correct

Edit

Question 5

Question MCQ▾

Electric iron and heater works on the principle of:

Choices

Choice (4)Response

a.

Heating effect of the electric current

b.

Resistance offered by the wire

c.

Amount of heat produced

d.

Question does not provide sufficient data or is vague

Edit

Question 6

Question MCQ▾

A coil of insulted wire wound around a piece of magnetic substance is called as:

Choices

Choice (4)Response

a.

Electromagnet

b.

Magnet

c.

Magnetic field

d.

Electric field

Edit