Aakanksha

Can we help Captain Kirk power

up his Communicator using lemons?

A lemon Penny Zinc coated screws Multimeter 2 alligator clips

1. Insert penny & zinc coated screw into the

lemon.

2. Connect 2 wires with alligator clips to the

penny and the screw.

3. Connect the Multimeter to the other end of

the two wires.

4. Measure the voltage

All batteries have a "+" and "-" side. The Lemon Battery in the picture shows

Copper = positive (+)Zinc/Steel (eg. paper clip) = negative (–)

Yes, now we can help Captain Kirk get back

to his spaceship ! Yippie!

1.5 V + 1.5 V + 1.5 V + 1.5 V =

1. Connect the penny of one lemon to the zinc screw of the next lemon.

2. Measure voltage.

3. Repeat to connect 3 lemons.

4. Measure voltage again.

( You should have one lemon with penny unconnected at one end and one lemon with zinc screw unconnected at the other end. )

Use alligator clip to connect the lemon battery to the Digital Clock.

Positive side (lemon battery) Positive side (Digital clock) negative side (lemon battery) negative side (Digital

clock)

Digital Clock

http://www.hilaroad.com MiniScience.com http://en.wikipedia.org/wiki/ http://www.energyquest.ca.gov www.furryelephant.com