Question

(i) A motor converts electrical energy into .....................(ii) An electric heater converts electrical energy into .....................
(iii) A microphone converts sound energy into .....................
(iv) A loudspeaker converts sound energy into .....................
(v) A heat engine converts heat energy into .....................
(vi) When we rub our hands together we change work into .....................

Answer 1

Answer:

(1) Kinetic Energy

(2) Heat energy

(3) Electrical energy

(4) Electrical energy

(5) Mechanical energy

(6) Force

Explanation:

Here, the answers

(i) A motor converts electrical energy into ........Kinetic Energy............

(ii) An electric heater converts electrical energy into ......Heat energy...............

(iii) A microphone converts sound energy into ........Electrical energy.............

(iv) A loudspeaker converts sound energy into ........Electrical energy...............

(v) A heat engine converts heat energy into .........Mechanical energy............

(vi) When we rub our hands together we change work into ........Force.............

Answer 2

Energy conservation:

(i) A motor converts electrical energy into Kinetic Energy.

(ii) An electric heater converts electrical energy into Heat energy.

(iii) A microphone converts sound energy into Electrical energy.

(iv) A loudspeaker converts sound energy (electrical) into Sound energy.

(v) A heat engine converts heat energy into Mechanical energy.

(vi) When we rub our hands together we change work into Heat energy.

Explanation:

• The energy transformation or conversion is taking place in the above given appliances and process.
• The energy is neither created nor destroyed. An object or location acquires energy through transfer of energy from another object or location.
• The conversion of energy is not an ideal process. The limitation of energy transformation is based on the process and appliances which defines the loss of energy during conversion.