What is the current of a circuit if voltage is 12 V and resistance is 3 Ω?

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What is the current of a circuit if voltage is 12 V and resistance is 3 Ω?

4.0 amps
a. An electrical device with a resistance of 3.0 Ω will allow a current of 4.0 amps to flow through it if a voltage drop of 12 Volts is impressed across the device.

How much current does a 12-volt battery have?

A typical 12-volt battery used in a RV or marine craft has a rating 125 AH, which means it can supply 10 amps of current for 12.5 hours or 20-amps of current for a period of 6.25 hours.

What is the electric current if a circuit has a resistance of 3 ohms and a voltage of 9v?

so 9/3=3 current is 3 amperes.

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How many amps does a 12-volt battery need?

Car batteries will typically have a capacity of 48 amp hours. What this means is a fully-charged 12-volt car battery rated at 48 amp hours can deliver 1 amp for 48 hours or 2 amps for 24 hours. This also means the battery can supply 8 amps for 6 hours under ideal operating conditions.

How do you calculate Wh?

How do I calculate watt hours (Wh)? To work out the Wh take the watts (W) of the appliance and multiply this with the hours used on the average day. ​This will give you the Wh consumed in your caravan/RV per day.

How many amps of current flow through a circuit that includes a 12 volt battery and a bulb with a resistance of 9 ohms?

1.33 Amps
The current through the circuit would be equal to the battery voltage divided by the overall or equivalent resistance. I = (VTot) / (RTot) = (12 Volts) / (9 Ohms) = 1.33 Amps.

How do you calculate amps from ohms and volts?

To calculate amps, divide the voltage by the resistance in ohms. Current (A) = Voltage (V) ÷ Resistance (Ω) For example, let’s find the current of a 12 volt circuit with 10 ohms of resistance. amps = volts ÷ ohms.

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How do you convert voltage to amps with resistance?

Convert Volts to Amps using Resistance Ohm’s Law provides an alternate formula to find volts if amps and the electrical resistance is known. To calculate amps, divide the voltage by the resistance in ohms. Current (A) = Voltage (V) ÷ Resistance (Ω)

How do you find the current of a 12 volt circuit?

For example, let’s find the current of a 12 volt circuit with 10 ohms of resistance. amps = volts ÷ ohms. amps = 12 V ÷ 10 Ω. amps = 1.2 A.

How many amps are in a 12 volt power supply?

Equivalent volts and amps for various power ratings Voltage Current Power 12 Volts 8.333 Amps 100 Watts 24 Volts 0.2083 Amps 5 Watts 24 Volts 0.4167 Amps 10 Watts 24 Volts 0.625 Amps 15 Watts