SCIENCE ELECTRICITY Flashcards
In which direction are the electrons flowing?
a) counter-clockwise
b) clockwise
a) counter-clockwise
By adding another load (R3) in parallel, the total resistance of the
circuit will:
a) Increase
b) Decrease
c) Not change
b) Decrease
The current flowing through bulb R3 would be…
a) The same as I1
b) The same as I2
c) The same as I3
d) Equal to both I2 & I3
e) Equal to both I1 & I4
Equal to both I2 & I3
VT = V1 = V2
a) TRUE
b) FALSE
a) TRUE
If light bulb R2 went out which bulbs would still be on?
a) R1
b) R2
c) None of them
d) All of them
c) None of them
By adding another light bulb in series, what will happen to the
value for VT?
a) No change
b) It will decrease
c) It will increase
a) No change
If switch S1 was opened, which light would still be on?
a) R1
b) R2
c) None of them
d) All of them
c) None of them
VT = V1 = V2
a) TRUE
b) FALSE
a) TRUE
The voltage across V2 = voltage across V1
a) TRUE
b) FALSE
a) TRUE
WHAT IS THE FORMULA FOR POWER (P)
P = V X I
A toaster connected to a 110 V power source has 6.0 A of current flowing through it. How much power is dissipated as heat?
660 WATTS (W)
A current of 0.50 A flows through a light bulb connected to a 110 V outlet. How much
power is dissipated by this bulb?
55 W
If the generator runs for 5.0 min, how much energy will the lamp convert into heat and light?
45000 J
WHAT IS FORMULA FOR ENERGY?
E = P X T (POWER X TIMES)
A light bulb draws 1.25 A of current from a 120 V gasoline-powered generator.
How much power does the generator produce?
150 W
