✔ If The Voltage Across A Resistor Has Tripled The Current Will

If The Voltage Across A Resistor Has Tripled The Current Will

- July 16, 2017

So if the voltage is doubled and resistance stays the same the current will be doubled. Resistance is independent of current and voltage so it will remain constant.

Sheet 2 Electronics Sheet Mechanical Engineering 1234

Resistivity And Electrical Conductivity

Power S Relationship To Resistance Electrical Engineering

If you replace the resistor with one that has twice the resistance value how much current will you measure.

If the voltage across a resistor has tripled the current will. It depends on what kind of load is in the circuit. The voltage across the left resistor is 6 volts and the voltage across the right resistor is 6 volts. If the output terminal voltage of the source is tripled the circuit current will triple.

The initial current will be 10ma and the power dissipated will be 100mw. There is a fixed voltage across a resistor and you measure a current of 1a. In a parallel circuit the voltage drop across each resistor will be the same as the power source.

Ohms law states that the voltage across a resistor is the product of the current times the resistance or vi x r i times r. If you know the voltage across the whole circuit the answer is surprisingly easy. V is voltage r is resistance and i is current or amperage.

Now lets increase voltage to 40v. Use the total voltage to find the voltage across each resistor. In a series circuit the voltage drop across each resistor will be directly proportional to the size of the resistor.

Ohms law states that the voltage across a resistor is the product of the current times the resistance or vi x r i times r. Or i vr or i f you double it ie 2i 2 v r or 2v r 2 i. Our resistor might warm up a bit but otherwise at least in a room temperature environment.

You can see the above when the voltage is doubled current is also doubled provided that the resistance remaining constant. V is voltage r is resistance and i is current or amperage. Answer to when the voltage across a resistor is doubled the current willa tripleb halvec doubled not change.

Ohms law is conserved because the value of the current flowing through each resistor is different. Each parallel wire has the same voltage as the entire circuit. Initially our resistor will have 40ma of current running through it.

If the load is a device whose resistance exh. If it a simple fixed resistor and is rated to handle the current then the current is in direct proportion to the voltage and will also be quadrupled. Vir where v is voltage i is current and r is the resistance.

So if the voltage is doubled and resistance stays the same the current will be doubled. Lets say a circuit with two parallel resistors is powered by a 6 volt battery.