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Q: What is the current through a wire that has a resistance of 30 ohms if the voltage is 90 volts?
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What voltage required to send a current of 4 amps through a resistance of 60ohm?

16 volts


Would it be true to say that current causes voltage?

Volts = Current x Resistance. The voltage is where the potential resides for the amount of current flowing through a resistance. Think about the voltage as a potential source of electrons that then flow through a circuit depending on the Load, or resistance in this example.


How much current would an applied voltage of 10 volts cause through a resistance of 5 ohms?

10 volts applied to 5 ohms would cause a current flow of 2 amperes. Current = voltage divided by resistance.


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If a circuit has a resistance of 4 ohm's how much voltage is needed to produce a 1.4 current in the circuit?

Voltage across a resistance = (resistance) x (current through the resistance) =4 x 1.4 = 5.6If the ' 1.4 ' is Amperes of current, then the required voltage is 5.6 volts.


What is the amperage in an electric circuit when the voltage 120 volts and the resistance is 40 ohms?

Ohm's Law states Voltage = Current x Resistance. You rewrite the equation as Current = Volts / Resistance to solve for current.


What is the current through a wire that has a resistance of 30 ohms if the voltage is 45 volts?

If the resistance of the wire is 30 ohms and the voltage between the two ends of the wire is 45 volts,then the current through the wire isI = E/R = (45/30) = 1.5 amperes.


How any volts are produced in a circuit with 40 amp's of current flowing through a wire with 5 ohms of resistance?

It is a voltage (potential) applied to a load that causes a current to flow through the load. Ohm's Law encapsulates this principal and states Volts = Current x Resistance. In your example, the applied voltage would be 200 volts.


If the current through a heater coil is 5 amp and the supply voltage is 120 volts the coil resistance is?

The formula you are looking for is R = E/I. Resistance = Volts/Amps.


How much current will flow through a 12 ohm resistor if 6 volts are applied across it?

Voltage / Resistance = Current, you do the math


If the voltage is 5 volts and resistance is 25 ohms what is the current flow?

0.2 volts