Download Physics Review Chapter 3

Physics Review Electricity
Definitions:
Conductor:
Electric field:
Grounding:
Induction:
Insulator:
Potential difference:
Current:
Conventional Current:
Electron Flow:
Alternating Current:
Direct Current:
Resistance:
Ohmic Materials:
Non-ohmic Materials:
Electric Power:
Fill in the table:
Name
Potential Difference
Charge
Current
Time
Resistance
Electric Power
Electric Force
Distance (between charges)
Symbol
SI Unit
One Coulomb contains how many electrons?
What is the charge of one electron?
List an example of Insulator, Conductor, and Semiconductor:
(circle one)
Like charges repel/attract and Unlike charges repel/attract
What is the value and symbol for Coulombs Constant?
The electron and proton of a hydrogen atom are separated, on average, by a
distance of about 5.3 x 10-11 m.
Find the magnitude of the electric force between them.
The current in a light bulb is 0.835 A. How long does it take for a total charge of
1.67 C to pass a point in the wire?
Batteries maintain electric current by converting (
) energy into electrical
energy.
Generators convert (
) energy into electrical energy.
Does a longer wire have more or less resistance than a shorter wire?
Does a skinny wire have more or less resistance than a wide wire?
Does a hot wire have more or less resistance than a cold wire?
Does a copper wire have more or less resistance than a plastic wire?
An electric space heater is connected across a 120 V outlet. The heater dissipates
1320 W of power in the form of electromagnetic radiation and heat. Calculate the
resistance of the heater.
How much does it cost to operate a 100.0 W light bulb for 24 h if electrical energy
costs $0.080 per kWh?
A Sony Playstaion uses on average 31.74 kWh per week when idling, whereas a
Nintendo Wii only uses 2.71 kWh per week. Assuming the electric company charges
you $0.080 per kWh, how much more does it cost to run a Sony Playstation every
year then a Nintendo Wii?
Draw the symbol for each:
Battery:
Switch(open):
Switch(closed):
Resistor:
Light Bulb:
Capacitor:
Draw a series circuit with 1 battery, 1 switch, and 4 light bulbs.
Draw a parallel circuit with 1 battery, 1 switch, and 4 light bulbs.
A 9V battery is connected to four 2 ohm light bulbs. Find the equivalent resistance
for the circuit and the current in the series circuit.
A 12V battery is connected to a 2 ohm light bulb, a 4 ohm light bulb and a 6 ohm
light bulb. Find the equivalent resistance for the circuit and the current in the
parallel circuit.