DO PAGES 48-50!!!
finish page 14
Answer keys:
page 29
1) P=v^2/R
= (3)^2/30
= 0.3 W
2) T=v/R
=3/30
=0.1 A
3)power varies inversely with resistance. as R of bulb increases the amount of power of the bulb increases
4) E(or W)=Pt
= (.3)(3600)
= 1000J
page 31
1. resistance- property of an object that determines how much current will flow through that object
factors- length of the wire cross sectional area temperature material the object is made of.
2. voltage is a potential difference in other words voltage is PE/ charge. current is the movement of charge due to potential difference. thus, voltage is nothing more than a difference in potential and does not necessarily create a current. given the proper conditions, voltage causes charge to move and when they do a current is created
3. R=v/I
since v is a constant and R is increasing, the circuit must be decreasing
4. they allow complex circuits to be graphically illustrated clearly and concisely
