MEDIUM
7th ICSE
IMPORTANT
Earn 100

In which of the following case the bulb will glow:

  1. Only one terminal of a cell is joined with a metal wire to one terminal of the bulb.

  2. Both terminals of the bulb are joined with two metal wires to one terminal of the cell.

  3. One terminal of the cell is joined to one terminal of the bulb and other terminal of the cell to the other terminal of the bulb.

Important Questions on Electricity and Magnetism

MEDIUM
7th ICSE
IMPORTANT
Concise PHYSICS Middle School 7>Chapter 7 - Electricity and Magnetism>TEST YOURSELF>Q 29

Distinguish between conductors and insulators of electricity. Give two examples of each.

MEDIUM
7th ICSE
IMPORTANT
Concise PHYSICS Middle School 7>Chapter 7 - Electricity and Magnetism>TEST YOURSELF>Q 30
Select conductors and insulators from the following:
Glass, silver, copper, wood, paper, pure water, impure water, aluminium, iron, leather, plastic, steel, human body and ebonite.
MEDIUM
7th ICSE
IMPORTANT
Concise PHYSICS Middle School 7>Chapter 7 - Electricity and Magnetism>TEST YOURSELF>Q 31

The following diagram shows four circuits A, B, C and D. Each circuit has a cell and a torch bulb. Name the circuits in which the bulb will glow? Give reason to your answer

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EASY
7th ICSE
IMPORTANT
Concise PHYSICS Middle School 7>Chapter 7 - Electricity and Magnetism>TEST YOURSELF>Q 32

The diagram given below shows a bulb connected with a cell having terminals A and B. Mark the direction of current in the bulb.

MEDIUM
7th ICSE
IMPORTANT
Concise PHYSICS Middle School 7>Chapter 7 - Electricity and Magnetism>TEST YOURSELF>Q 33
State the function of each of the following in an electric circuit and draw its symbolic representation: (1) Switch and (2) Cell.
EASY
7th ICSE
IMPORTANT
Concise PHYSICS Middle School 7>Chapter 7 - Electricity and Magnetism>TEST YOURSELF>Q 34
Draw a circuit diagram for a bulb connected to a cell with a switch. Mark arrow in the diagram to indicate the direction of flow of current.
MEDIUM
7th ICSE
IMPORTANT
Concise PHYSICS Middle School 7>Chapter 7 - Electricity and Magnetism>TEST YOURSELF>Q 35
In which arrangement are the appliances connected in the electric circuit of our homes, Series or Parallel? Give one reason for your answer.
MEDIUM
7th ICSE
IMPORTANT
Concise PHYSICS Middle School 7>Chapter 7 - Electricity and Magnetism>TEST YOURSELF>Q 36
State two precautions that you must take when switching on an electric circuit.