Transcript Ohms Review PPT

Resistance in a wire decreases
A. As wire length increases
B. As diameter increases
C. As temperature increases
A 20 A current flows through a
5Ω resistor. What is the
voltage?
A. 100 V
B. 4 V
C. 25 V
D. 20V
Current can be described as?
A. C/s
B. J
C. J/s
D. J/C
The electrostatic force between
two charges is 8N. If the
distance doubles, what is the
new force between them?
A. 16 N
B. 8 N
C. 4 N
D. 2 N
Which of the following is a rate?
A. Volts
B. Current
C. Resistance
D. Work
What is the charge of 1
electron?
A. -1 C
B. -1.6 x 10-19 C
C. -6.25x 1018 C
D. -9 x 109 C
Voltage can be described as?
A. C/s
B. J
C. J/s
D. J/C
50 C loses 600 J of energy as it
travels through a circuit. What
must be the potential difference
in the circuit?
A. 50 V
B. 12 V
C. 0.08 V
D. Not enough information
Calculate the resistance of a
400W heater on a 120 V line.
A. 0.3 Ω
B. 3.3 Ω
C. 36 Ω
D. 48000 Ω
The energy of bulb A is
converted to light by 20 W in
one hour. The energy of bulb B
is converted to light by 80 W in
one hour.
A. Energy of bulb A is greater
B. Energy of bulb B is greater
C. Energies are equal
D. Not enough information
A negatively charged ballon is
used to charge an electroscope
positively. The process used
was
A. Conduction
B. Neutralization
C. Transduction
D. Induction
What is the current of a toaster
in a 110V line that has a power
rating of 330W?
A. 0.3 A
B. 330 A
C. 3 A
D. 110 A
Watts is the unit for?
A. Power
B. Work
C. Voltage
D. Energy
A 100W light bulb and a 75W
light bulb remain lit 24 hours a
day for a week. How much does
it cost to operate them if you are
charged $0.09/kWHr?
A. $1.68
B. $2.65
C. $29.40
D. $1.75
Two balloons have the same
charge of 8µC. What is the
electric force between them if
they are 0.5 m apart?
A. 2.3 x 10-2 N
B. 2.3 x 1012 N
C. 2.88 x 105 N
D. 1.44 x 105 N