ICSE ICSE Class 7 - CISCE Question Bank Solutions for Physics

Fill in the blank with the appropriate colour

Green + Red = ______

The leaves appear green when seen in white light. Give a reason.

A rose appears red in white light. How will it appear in
green light? Give a reason for your answer.

Why does a piece of paper appear white in sunlight ? How would you expect it to appear when viewed in red light?

A piece of paper appears black in sunlight. What will be its colour when seen in red light?

A rose appears red in white light. How will it appear in red light? 
Give a reason for your answer.

Define the term current.

Write true or false for a given statement.

Wool is a conductor of electricity.

Select the correct alternative

Electricity can flow through

Select the correct alternative

Electricity does not flow through

What is a battery?

You are provided with a torch bulb, a cell and two plastic coated f metal wires. Draw a diagram to show a complete circuit to light the bulb.

In which of the following case the bulb will glow :

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

State the function of each of the following in an electric circuit and draw its symbolic representation: (1) Switch and (2) Cell.

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.

Write true or false for a given statement.

A torch bulb glows if the terminals of the bulb are connected to the terminals of a cell by the metallic wire

For a circuit to be complete, every part of it must be made up of conductors.

Write true or false for a given statement.

A switch is an on-off device in an electric circuit.

What is an electric circuit ?