Find out three materials that can be used for making fuse wires. Name the properties that make them eligible for making a fuse wire. Draw an electric circuit diagram with a cell and a bulb. Show how you connect a fuse in this circuit.

Important Questions on Electric Current and Its Effects

EASY

7th CBSE

IMPORTANT

NEW SCIENCE In Everyday Life>Chapter 13 - Electric Current and Its Effects>Let's Remember>Q A

Write T for the True and F for the false statements. Correct the false statements.
A source of electric current is not a necessary condition for an electric current to flow in an electric circuit.

EASY

7th CBSE

IMPORTANT

NEW SCIENCE In Everyday Life>Chapter 13 - Electric Current and Its Effects>Let's Remember>Q A

Write T for the True and F for the false statements. Correct the false statements.
An electric current will not flow if the switch in the circuit is open.

EASY

7th CBSE

IMPORTANT

NEW SCIENCE In Everyday Life>Chapter 13 - Electric Current and Its Effects>Let's Remember>Q A

Write T for the True and F for the False statements. Correct the false statements.
The filament of an incandescent light bulb glows because of the heating effect of electric current.

EASY

7th CBSE

IMPORTANT

NEW SCIENCE In Everyday Life>Chapter 13 - Electric Current and Its Effects>Let's Remember>Q A

Write T for the True and F for the False statements. Correct the false statements.
An electric fuse protects the appliances in the circuit.

EASY

7th CBSE

IMPORTANT

NEW SCIENCE In Everyday Life>Chapter 13 - Electric Current and Its Effects>Let's Remember>Q B

Why do we need circuit diagrams?

EASY

7th CBSE