0
Questions seem to be two! First is the direct current in a circuit with 12 V battery and 3 ohm resistor in it. The answer is 4 ampere if there is negligible internal resistance in the battery.
By ohm's law V = R I So, I = V/R
Second one is the alternating current with 120V given to 60 W bulb. The answer is 0.5 ampere. This 0.5 is the rms value of alternating current.
Power P = V I So, I = P/V
What else can I help you with?
A circuit has 25 ohm light bulb and t 120 volts what is the current?
I = E/R = 120/25 = 4.8 amperes
How do you know when electric current is flowing in a light bulb circuit?
You know if current is flowing in a bulb circuit because, if there is enough power (voltage times current), the bulb will illuminate. If there is current, but not enough power to illuminate the bulb, you will need to measure the current with an ammeter to see if there is any current.
What voltage is required to sustain a current of 0.50 through a light bulb resistance of 190?
The voltage of a circuit with a resistance of 250 ohms and a current of 0.95 amps is 237.5 volts. Ohms's law: Voltage = Current times Resistance
A light bulb in a simple circuit blows and goes out Is current now flowing in the circuit?
No. Circuit is open but still HOT.
What causes varying light bulb intensities on same circuit?
For a series circuit... Each bulb has different impedance (ohms) resulting in a different voltage drop across each. Remember Kirchoff's Current Law: The current at each point in a series circuit is the same. That same current, multiplied by the different voltage drops results in different powers (watts = amps * volts) for each bulb. For a parallel circuit. Again, each bulb still has different impedance. This time, the voltage drop is the same (Kirchoff's Voltage Law) but the current in each bulb is different. Same situation - different power in each bulb.
When using a 9 volt battery on a closed circuit with 2 light bulbs how many volts are used to light each bulb?
Each light bulb will receive the full 9 volts from the battery in a series circuit, so each bulb will be operating on 9 volts.
A circuit has 25 ohm light bulb and t 120 volts what is the current?
I = E/R = 120/25 = 4.8 amperes
What is the current in an ac circuit with 120-volts and a 60 -watt light bulb?
Current or amperage, is wattage divided by voltage. 60 / 120 = .5 amp.
What is the current in a AC circuit with 120-volts and a 60- watt light bulb?
Current or amperage, is wattage divided by voltage. 60 / 120 = .5 amp.
What is the current in an ac circuit with 120- volts and a 60-watt light bulb?
Current or amperage, is wattage divided by voltage. 60 / 120 = .5 amp.
What is the current in an AC circuit with 120 volts and a 60-watt light bulb?
Power = (voltage) x (current) 60 = 120 x I I = 60/120 = 1/2 Amp.
If two light-bulbs are connected in a series circuit and one of the light-bulb's current flowing is 0.5 A what is the current flowing in the other light-bulb?
Current in a series circuit is the same throughout the circuit. Voltages are additive. Voltage in a parallel circuit is the same throughout the circuit. Currents are additive.
Why is a light bulb not on when a switch is not closed?
A closed switch completes the electrical circuit, allowing current to flow through the light bulb and generate light. If the switch is not closed, there is an open circuit, meaning the current cannot flow and the light bulb does not turn on.
Why is there 0 current when a light bulb burns out?
Incomplete circuit
Why the circuit should close for the light bulb to light up?
The circuit needs to be closed for the light bulb to light up because it allows current to flow uninterrupted from the power source through the light bulb, which then converts electrical energy into light and heat. If the circuit is open, the flow of current is interrupted, and the light bulb will not receive the necessary electrical energy to produce light.
How much resistance does a light bulb create if it has a current of 25 mA around it in a 9 V circuit?
how much resistance does a light bulb creat if iyt has a current of 25 mA around it in a 9 V circuit?
How do you know when electric current is flowing in a light bulb circuit?
You know if current is flowing in a bulb circuit because, if there is enough power (voltage times current), the bulb will illuminate. If there is current, but not enough power to illuminate the bulb, you will need to measure the current with an ammeter to see if there is any current.
