Transcript Day 42 Ohms Lawx

STARTER
• What is the formula for Ohm’s Law?
• What is the formula for Electrical Power?
OHM’S LAW &
ELECTRIC POWER
DAY 42
PARALLEL VS SERIES
• What is the difference between a series and
parallel circuit?
PROBLEM SOLVING
• Two bulbs connected in a parallel shine more brightly than
when they are connected to the same voltage source on
series. Explain why this doesn’t violate the law of
conservation of energy.
• You plug in a string of Christmas lights and notice that the
entire string turns off when you remove one bulb. Explain
why this happens.
REVIEW
Directions: Copy and Answer the following statements using the terms Series
or Parallel Circuits.
1. Only one path for the electricity.
2. Dependent paths.
3. How your house is wired.
4. Independent current paths.
5. Can turn off one light without others turning off.
6. If you turn off one light, all the lights turn off.
7. More than one path for the electricity to flow.
PRACTICE!!!
• A stereo receiver uses a current of 2.2 amps
from a 120-volt line. What is its power?
• A television connected to a 120-volt line uses
102 watts of power. How much current flows
through it?
MAKE YOUR OWN CIRCUIT
• Please follow directions or it will not work!
QUIZ
• Waves Quiz
• Please remove all materials from your desk except
your pencil.
• You will have 20 minutes!