Electric current and cells

Direct current can be produced from........

• Electrochemical cells

• Electric generator

• Electric power station

• Electric motor

In the electric cell, the...... Energy is converted into electric energy

• Kinetic

• Magnetic

• Chemical

• Mechanical

To generate an alternating current, we use the.......

• Dry cell

• Dynamo

• Dry battery

• All the previous

In dynamo,.... Energy is converted into electric energy

• Magnetic

• Kinetic

• Chemical

• Light

On connecting 5 electric cells, the e. m. f. of each one is 2.5volt in parallel the total e. m. f. of the new battery equal..... Volt

• 2.5

• 5

• 7.5

• 12.5

A group of similar cells which are connected in parallel makes a battery of e. m. f................

• greater than the e. m. f. Of one cell

• equal to the e. m. f. Of one cell

• smaller than the e. m. f. of one cell

• there's no correct answer