Physics

Physics, 29.09.2019 00:00, freesiareal2780

What is the difference between current and voltage besides their units of measurement

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Physics, 22.06.2019 11:30, Gigglygoose4181

1. a camcorder has a power rating of 19 watts. if the output voltage from its battery is 7 volts, what current does it use?answer units 2. a 1.5m wire carries a 6 a current when a potential difference of 57 v is applied. what is the resistance of the wire? yourunits 3. a clothes dryer uses about 2 amps of current from a 240 volt line. how much power does it use? yourunits 4.

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Physics, 25.06.2019 10:10, anonymous654

Kirchhoff's loop rule says that the sum of the potential changes around a loop must equal zero. therefore, if the input voltage at some moment is 10v, then the voltage drop across the diode plus the voltage drop across the resistor must equal 10v. in general, this gives the equation ir+vd=vin, where i is the current through the diode and resistor, r is the resistance of the resistor, vd is the voltage drop across the diode, and vin is the potential difference of the source. (note that the current through the diode is the same as the current through the resistor because the circuit shown has only one loop.) if you plug in the current-voltage relationship for a diode given in the problem introduction, you will get an equation for vd in terms of r. unfortuately, this is a transcendental equation, which must be solved numerically. for parts b - d, assume that the input voltage is 10 v, the resistance is 1.000kω, and the potential difference across the diode is only 0.3561v. part b what is the current i that flows through the diode? express your answer in amperes to three significant figure. i i i = nothing a

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Physics, 02.08.2019 04:50, juniieb

You are asked to explain the relationship between current and voltage. select the statement that would be an accurate reply. a. voltage is the force that resists the flow of electricity; if we increase the voltage, and do not change the resistance, we will decrease the current. b. voltage is the force that drives electric current. when we increase the voltage, and do not change the resistance, we have an increase in current. c. voltage is how much current passes a point in a given time. if we want to increase the voltage, we would need to increase the current. d. voltage describe the amount that a material resists the flow of electrons. if we want to increase the voltage we need to increase the resistance.

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Physics, 04.10.2019 19:00, matty198

Acamcorder has a power rating of 12 watts. if the output voltage from its battery is 3 volts, what current does it use? the current in a hair dryer measures 13 amps. the resistance of the hair dryer is 9 ohms. what is the voltage? which of the following statements about ohm’s law is true? a. to increase the current, decrease the resistance. b. ohm’s law relates power, current and resistance. c. increasing the voltage decreases current if resistance stays the same. d. keeping the same voltage and decreasing resistance decreases the current. a 1.5m wire carries a 7 a current when a potential difference of 53 v is applied. what is the resistance of the wire?

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