Units
Units of Battery potential
Volts
Equation relating I, V and R
V = IR
Does conventional current flow from large line of battery around circuit to small line
or
small line to large line?
large line to small line
Units of current, I
amperes, C/sec
Power equation that include V
P = IV
Why happens to a conductors temperature when current is increased?
it goes up
Units of resistance
Ohms (horseshoe)
Power equation that includes R
P = I^2 R
If a light bulb breaks, which circuit will continue working, parallel or series? Why?
parallel, multiple paths
Units of Power
Watts
Effective resistance for 3 resistors (R1, R2, and R3) in series
Reff = R1 + R2 + R3
Which one can be "reset", fuse or circuit breaker?
circuit breaker
Units of energy
Joules
Effective resistance for 3 resistors (R1,R2, and R3) in parallel
1/Reff = 1/R1 + 1/R2 + 1/R3, solve for Reff
How does a heater produce heat?
Resistance changes kinetic energy to heat.