Match the following: Column A Column B 1. Thick small line in the circuit diagram a. Alloy of nickel and chromium 2. Fuse b. Magnetic effect of electric current 3. Electric bell c. Cranes 4. Electromagnet d. Negative terminal of a cell 5. Nichrome e. Heating effect of electric current

For 1 , correct option is (d). The thick small line in the circuit diagram represents the negative terminal of a cell. The cell is a device that converts chemical energy into electrical energy. For 2 , correct option is (e). Fuse is a safety device that works on the heating effect of electric current it heats up and melts down in order to break the circuit and protects electrical appliances from getting damaged due to the flow of excessive electric current. For 3 , correct option is (b). An electric bell works on the magnetic effect of electric current. An electromagnet is used to attract the hammer of an electric bell to strike the gong. For 4 , correct option is (c). Electromagnets are used in cranes to lift heavy loads. The magnet that is attached to the crane activates when electricity is passed through it. For 5 , correct option is (a). Nichrome is an alloy of nickel and chromium. It is used is as a heating element in heating devices because it has a high resistance. Hence, the correct match for the following is: 1. Thick small line in the circuit diagram (d) Negative terminal of a cell 2. Fuse (e) heating effect of electric current 3. Electric bell (b) Magnetic effect of electric current 4. Electromagnet (c) Cranes 5. Nichrome (a) Alloy of nickel and chromium

E M B I B E

Interactive Science 7>Chapter 14 - Electric Current and Its Effects>SUMMATIVE ASSESSMENT>Q 3

MEDIUM

7th CBSE

IMPORTANT

Earn 100

Electromagnets can also work without electricity.

70.91% studentsanswered this correctly

Important Questions on Electric Current and Its Effects

MEDIUM

7th CBSE

IMPORTANT

Interactive Science 7>Chapter 14 - Electric Current and Its Effects>SUMMATIVE ASSESSMENT>Q 4

Fuses are used in a circuit to prevent damage and chances of fire.

MEDIUM

7th CBSE

IMPORTANT

Interactive Science 7>Chapter 14 - Electric Current and Its Effects>SUMMATIVE ASSESSMENT>Q 5

We should never touch electrical appliances with wet hands.

MEDIUM

7th CBSE

IMPORTANT

Interactive Science 7>Chapter 14 - Electric Current and Its Effects>SUMMATIVE ASSESSMENT>Match the following

Match the following:

Column A	Column B
1. Thick small line in the circuit diagram	a. Alloy of nickel and chromium
2. Fuse	b. Magnetic effect of electric current
3. Electric bell	c. Cranes
4. Electromagnet	d. Negative terminal of a cell
5. Nichrome	e. Heating effect of electric current