Electromotive Force - E.M.F

What is an electromotive force?

• The force which causes voltage to flow in an electrical circuit.

• The force which causes charge to flow in an electrical circuit.

• The force which causes current to flow in an electrical circuit.

Which converts chemical energy to electrical energy?

• Acid and copper.

• Alkaline and copper.

• Cells and batteries.

• Negative and positive.

Which converts mechanical energy into electrical energy by means of electromagnetic induction?

• Generators

• Oscillators

• Terminators

• Incubators

Friction between certain materials produces electrical energy, what type of energy is it?

• Rubbing electricity

• Friction electricity

• Contact electricity

• Static electricity

Piezo electric is:

• Mechanical energy converted into electrical energy by means of fire.

• Mechanical energy converted into electrical energy by means of friction.

• Mechanical energy converted into electrical energy by means of motion.

• Mechanical energy converted into electrical energy by means of pressure on Crystal's.

Piezo electric is:

• Mechanical energy converted into electrical energy by means of fire.

• Mechanical energy converted into electrical energy by means of friction.

• Mechanical energy converted into electrical energy by means of motion.

• Mechanical energy converted into electrical energy by means of pressure on Crystal's.

What type of energy converts light energy into electrical energy?

• Piezo electric

• Thermocouple

• Static electricity

• Photo electric

Thermocouple:

• Converts water into electrical energy.

• Converts pressure into electrical energy.

• Converts heat energy into electrical energy.

• Converts light into electrical energy.

Cathode is:

• The negative terminal of the cell or battery when being discharged.

• The positive terminal of the cell or battery when being discharged.

Anode is:

• The negative terminal of the cell or battery when being discharged.

• The positive terminal of the cell or battery when being discharged.