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Published byJasmine Long Modified over 3 years ago

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Energy Review

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The unit for kinetic energy. Joule

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The quantity represented by the kilowatt hour. Answer: Electric energy

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The unit for charge. Answer:Coulomb

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The equation for power Answer: P=IV

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In the equation for Ohm’s Law, represented by the “I” Answer: Current

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The equation to solve for current which includes charge and time. Answer: I = q/t

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The equation for Ohm’s Law Answer: V=IR

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The rate at which energy is consumed Answer: Power

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The definition of electric current. Answer: flow of electric charge

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The relationship between current and resistance. Answer: direct

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The quantity that slows down current in a circuit Answer:resistance

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The unit for power. Answer: watt

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The quantity that expresses the amount of energy in a charge Answer: voltage

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The flow of positive charges in a circuit Answer: conventional current

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The current through the starter motor of a car is 120 A. If the battery maintains 10 V across the motor, how much electric energy is delivered to the starter in 10 s? (Hint: calculate power first) Answer: Find power P=IV=120 A(10V)=1200 W Find EnergyE=PtE=1200 W(10s)=12,000J

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In the equation for Coulomb’s Law, represented by the letter “q” Answer: charge

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The type of relationship shown between current and voltage Answer:direct

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The type of circuit in which one pathway exists Answer:series

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The quantity that represents potential difference. Answer:voltage

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A flashlight bulb is rated at 9.0 W. If the light bulb drops 3.0 V, how much current goes through it? Answer:P=IV 9.0W = I(3.0V) I=3 A

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A drawing of a circuit using symbols Answer: schematic

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The outcome of adding resistors in a circuit when voltage does not change. Answer: decrease in current

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The letter that represents resistance in Ohm’s Law. Answer: R

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The symbol that represents a battery in a circuit Answer:

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The type of circuit in which total resistance is greater than a single resistor Answer: series

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The total voltage drop across each resistor in a parallel circuit is ____ the total voltage in the circuit. Answer: equal to

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The unit for resistance. Answer: ohms

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The current through a light bulb connected across the terminals of a 125 V outlet is 0.5 A. How much power is supplied to the bulb? Answer: » P=IV » P=(0.5A)(125V) » P=62.5 W

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The connection required for a voltmeter. Answer: Parallel

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A lamp uses 6.0 V and 12 W when it is operating. What is the current through the lamp? Answer: P=IV 12W=I(6.0V) I=2A

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A 15 ohm and a 5 ohm resistor are connected in series. What is the equivalent resistance? Answer: 20 ohms

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The behavior of current in a parallel circuit. Answer: Adds up to total

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A device for measuring current. Answer: ammeter

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Draw a parallel circuit with three lamps in parallel, and a battery.

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Three types of energy which electric energy can be converted to Answer: sound, light, heat

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A device for measuring voltage. Answer: voltmeter

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Type of circuit in which current is the same through each branch. Answer: series

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The type of connection used for an ammeter Answer: series

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An outlet that prevents injuries that are caused when an electric appliance falls into water. It contains an electric circuit that detects an extra current path and opens the circuit. Answer: ground fault interrupter

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The symbol for a resistor in a circuit. Answer: Ώ

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An automatic switch that opens when the current reaches a value greater than the rated value in the circuit. Answer: circuit breaker

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A mobile source of electric power Answer: battery

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The man who created the first battery to produce a lasting current Answer: Volta

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Type of circuit in which voltage is the same through each branch. Answer: parallel

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The current that passes through a 6 ohm resistor and uses 12 V. Answer: V=IR » 12V=I (6.0 ohms) » I=2A

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Draw a series circuit with one lamp, battery and ammeter.

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The purpose of a resistor in a circuit. Answer: decrease current

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The flow of electric charge Answer: current

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One way in which current can be increased in a circuit. Answer: increase voltage or decrease resistance

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