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r=E/I
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∙ 13y ago
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Where did david Suzuki make a living?
N E R D s N E R D s
What are facts about inexhaustible natural resources?
n e v e r r u n o u t
What is the formula for determining electrical power?
Power ( in watt) =Voltage (in Volt) x Current (in Ampere) P=V I We Know, V=I R So we can also write, P=I2 R or P=V2/ R
When the voltage applied to the rheostat is doubled then tripled what happens to the rheostat?
The heat released by the rheostat with double the voltage will quadruple. When voltage is tripled, the power loss is 32 or 9 times that before. A rheostat is a kind of variable resistor. Since E = IR (voltage equals current times resistance), then I = E/R (current equals voltage divided by resistance). If the voltage is doubled and the resistance stays the same, then--you can see by the formula--the current would double. Now, power dissipated by a resistor is related to the product of the current and voltage (P = IE). But since a doubling of voltage produces also a doubling of current, double the current results in 2X2=4 times the power (heat) loss.
When plates of the earth move toward each other or collide they -----r-e?
disperse
How do you calculate internal resistance?
You need to use the formula E = IR + Ir where: E is the e.m.f. of the power supply (the theoretical maximum voltage across the terminals when no current is flowing) I is current R is resistance of the circuit (load resistance) and r is the internal resistance of the power supply. Therefore, you can rearrange this formula to give r: E = IR + Ir (Subtract IR) E-IR=Ir (divide by I) (E-IR)/I=r or r=(E-IR)/I
How do you calculate resistance?
You need to use the formula E = IR + Ir where: E is the e.m.f. of the power supply (the theoretical maximum voltage across the terminals when no current is flowing) I is current R is resistance of the circuit (load resistance) and r is the internal resistance of the power supply. Therefore, you can rearrange this formula to give r: E = IR + Ir (Subtract IR) E-IR=Ir (divide by I) (E-IR)/I=r or r=(E-IR)/I
State ohms law and give the formula?
The Ohm's law is defined as voltage propositional to current. The equation given by V=IR R IS THE PROPOSITIONAL CONSTANT
Why Does resistance cause voltage drop?
According to Ohm's law i.e. E=IR. When we increase resistance, keeping current constant, voltage will increase as in the above formula since E and R are directly proportional.
What is the formula of calculating effective current if resistor and voltage is given?
I = E/R or Current = Voltage/Resistance (Ohm's Law)
What is the formula I equals E over R for E?
I=E/R You need to multiply both sides by R to get the R to reduce out of the right side. I*R=E
What is a sample voltage problem and formula?
The formula for voltage is: E = I x R (E is voltage measured in volts, I is current measured in amperes or amps, R is resistance measured in ohms). Sample problem: An Mp3 player has 40 ohms of resistance and 0.1 amps of current flowing through it. What is the voltage that supplies the Mp3 player? Start with the formula, E = I x R. Put the values given into the formula: E = 0.1 x 40 Now, do the math: E = 4 volts
What is the formula for the statement of Ohm's Law?
v=iR (v=potential difference two pts, R=resistance)
How much amount of heat will be produced when one amphere current flows through a conductor?
you need more information my way. you use 2 formula v=ir and p=i*i*r. i=current r=resistance v=voltage and p=power (heat given out)
What is the name for the formula E equals IR?
Ohm's law - some times also represented as V = IR, where V is the Voltage, I is the Current and R being the Resistant (Constant). The law states that the current is directly proportional to the potential difference (voltage) across the two points. i.e. "I" is proportional to "V"
What is the formula to get the ampere using a 12 volts?
To obtain amperage from a formula you need at least two components. Formula for amperage are I = W/E, I = E/R and I = sq root of W/R.
If an electric drill uses 15A in a 20 volt circuit what is the resistance of the drill?
E=IR.....So, R=E/I........ E volts diveded by I amps= resistance.... You do the math...
