| Power | Voltage | Current | Resistance | Grab Bag |
|---|---|---|---|---|
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What is a watt?
Power is measured using this unit.
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What is one joule?
One volt gives a coulomb of charge this much electric potential energy.
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What is an ampere (amp), or a coulomb per second?
Current is measured using this unit.
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What is an ohm?
Resistance is measured using this unit.
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What is a switch?
This allows you to break or connect a circuit.
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What is VI, I^2R, or V^2/R?
Power can be calculated using this equation.
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What is zero volts?
This is the approximate voltage drop across 30 cm of copper wire.
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What is 500 mA?
A 10 volt power supply will induce this current flow through a 20 ohm resistor.
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What is 100 ohms?
If a 120 volt outlet is causing a current of 1.2 amps, this must be the resistance of the appliance/device.
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What is parallel?
The outlets in your house are hooked up in this configuration.
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What is the large resistor?
Equal current through a large and a small resistor means this resistor is using more power.
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What is 30 volts?
If four identical light bulbs are connected in series to a 120V outlet, this will be the voltage drop across one.
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What is 500 mA?
If a 10 ohm resistor and a 20 ohm resistor are connected in parallel to a 10 volt power supply, this will be the current in the 20 ohm resistor.
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What is 30 ohms?
This will be the total resistance of a circuit with a 5 ohm, a 10 ohm, and a 15 ohm resistor in series.
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What is series?
Christmas tree lights hooked up in this configuration would be extremely frustrating.
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What is 10 amps?
A 1200 watt hair dryer draws this much current when plugged into a standard 120 volt outlet.
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What is 120 volts?
If a 50 watt and a 100 watt light bulb are connected in parallel to a 120V outlet, this will be the voltage drop across the 100 watt bulb.
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What is 1 amp?
If a 3 ohm resistor and a 7 ohm resistor are hooked up in series to a 10 volt power supply, this will be the current in the 3 ohm resistor.
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What is 4 ohms?
This will be the total resistance of a circuit with three 12 ohm resistors in parallel.
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What is going back and forth very fast (60 Hz.)
Electrons in an AC circuit are doing this.
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What is 8 volts?
A 4 ohm resistor uses 16 watts of power when connected to a battery with this voltage.
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What is in parallel with the resistor?
A voltmeter should be hooked up like this to measure voltage drop across a resistor. (Sketch it.)
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What is in series with the resistor?
An ammeter should be hooked up like this to measure current through a resistor. (Sketch it.)
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What is 14 ohms?
This will be the total resistance of a circuit that has a 10 ohm resistor connected in series with two parallel 8 ohm resistors.
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What is 15 watts?
This will be the total power used by a circuit with a 6 volt power supply and a 4 and 6 ohm resistor in parallel.
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