Table of Contents
- 1 What happens when a light bulb is connected to a battery?
- 2 Will the brightness of bulb A reduced if the circuit will be added a bulb B with the same value of A in series connection Why or why not?
- 3 How do you light a lightbulb with a battery and foil?
- 4 Why doesn’t the bulb light when the batteries are taken off?
- 5 What will happen to the brightness of the bulb in this simple circuit Why?
- 6 How do you make current in a circuit smaller?
What happens when a light bulb is connected to a battery?
When a battery is connected to a lightbulb properly, current flows through the lightbulb and makes it glow. Therefore, the amount of current that flows through the lightbulb is the same as the amount that flows through the battery.
Will the brightness of bulb A reduced if the circuit will be added a bulb B with the same value of A in series connection Why or why not?
When a bulb in a series circuit is unscrewed all bulbs in the circuit go out. Increasing the number of bulbs in a series circuit decreases the brightness of the bulbs. Bulbs in parallel are brighter than bulbs in series. In a parallel circuit the voltage for each bulb is the same as the voltage in the circuit.
Is current bigger closer to the battery?
Two lamps are dimmer than a single lamp on its own. Three lamps in series are even dimmer. The battery pushes the current through the lamps. The bigger the resistance, the smaller the current.
How do you light a lightbulb with a battery and foil?
Try it this way:
- Cut two pieces of aluminum foil and fold them into strips.
- Tape one to the positive end of the battery and the other to the negative end.
- Touch one strip to the bulb, just under the glass.
- Touch the other strip to the silver tip on the end of the bulb.
Why doesn’t the bulb light when the batteries are taken off?
If the bulb does not light, check to be sure the wire is taped securely to the negative end of the battery. That means that electricity has to start from some source like one end of a battery and travel through some kind of conductor like a wire or other material that electricity can flow through.
What will happen to the brightness of the bulb if you add another bulb to the circuit shown at the right?
Intensity of brightness of lamps will decrease. When you add more bulb in series their resistance will increase, as the voltage of the source is same, so the total current of the circuit will decrease.
What will happen to the brightness of the bulb in this simple circuit Why?
The brightness of the bulb increases when the voltage is increased. All the bulbs in the circuit go out when a bulb is removed. The brightness of the bulbs decreases when the number of bulbs is increased. The bulbs in parallel are brighter.
How do you make current in a circuit smaller?
The current in a circuit is directly proportional to the electric potential difference impressed across the circuit and inversely proportional to the resistance of the circuit. Reducing the current can be done by reducing the voltage (choice A) or by increasing the resistance (choice D).
Do bulbs use up current to produce light?
Firstly current is not used up in glowing of bulb. The current flows through the bulb heating up the filament due to internal resistance which inturn glows. And as long as the potential difference is maintained the current will flow to bring both the ends at the same potential.