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Since power is the product of voltage and current, you will need to find out the power rating of the headlamp when on low beam. To find the current, divide the power of the lamp by the voltage (12 V).

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Q: What formula would you use to calculate the current drawn in a low beam headlamp circuit?
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What is the formula for total current in a series circuit?

Current = (Voltage across the circuit) divided by (Total resistance of the circuit). The current is the same at every point in the series circuit.


Using ohm's law what is the formula to find the resistance in a circuit?

Resistance of the circuit = (voltage across the circuit) divided by (current through the circuit)


How do you work out the current in a circuit?

we can calculate the current in a commmon electrical circuit by this formulae i.e,I=V\R where i is the current flowing in the conductor, R is resistance , V is the voltage.. THE FORMULA IS CORRECT but the term conductor does not suffice an explanation since a conductor is low in resistance R= resistance not conduction.


What is the formula to calculate the fuse or circuit breaker to protect motors?

Motors are rated either in Watts or Amps, and by Voltage. If the motor is rated in Amps, that is the fuse or circuit breaker size you will need. If rated in Watts, you will have to use the formula P=IE, where P is power in Watts, I is current in Amps, and E is Electromotive Force in Volts. Since we know the watts and volts, we solve for current, thus: I=P/E, and I will be your current rating. One note: These calculations give the MINIMUM rating needed for the motor to run. Fuses and circuit breakers are usually designed so that they will break if the circuit pulls 250% of the Motor's rating.


What is the dimensional formula for current?

One way to calculate current is using ohms law; current equals voltage divided by resistance or: I=V/R Where I is current, V is voltage and R is resistance.

Related questions

What is the formula for total current in a series circuit?

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How do you calculate current?

to fine I (current) when you have R (resistance) and V (voltage) you use the formula: I = V / R


What is the resistance of a circuit that takes a current of 0.5A when the voltage to the circuit is 40v?

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What role does the inductance play if the current increaces in a AC circuit?

i BELIEVE THAT THAT THE CHANGE IN CURRENT WITH THE ACKNOWLEDGEMENT TO TIME wHICH THE FORMULA= VL=is used


Using ohm's law what is the formula to find the resistance in a circuit?

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Use the formula: P=IR (power = current x resistance).


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How do you work out the current in a circuit?

we can calculate the current in a commmon electrical circuit by this formulae i.e,I=V\R where i is the current flowing in the conductor, R is resistance , V is the voltage.. THE FORMULA IS CORRECT but the term conductor does not suffice an explanation since a conductor is low in resistance R= resistance not conduction.