Do positive charges move in a circuit?
So… In a wire, negatively charged electrons move, and positively charged atoms don’t. Electrical engineers say that, in an electrical circuit, electricity flows one direction: out of the positive terminal of a battery and back into the negative terminal.
Which of the following is a complete closed path through which electric charges flow?
circuit
What type of charges attract?
Opposites attract. These two types of electrical charges – positive and negative – are said to be opposite types of charge. And consistent with our fundamental principle of charge interaction, a positively charged object will attract a negatively charged object.
What do the long straight lines represent in a circuit diagram?
Answer: In both cases, the long line is representative of the positive terminal of the energy source and the short line represents the negative terminal. A straight line is used to represent a connecting wire between any two components of the circuit.
What must be needed in order to illustrate an electrical circuit into a schematic diagram?
Answer: You need battery, wire and bulb. Using the verbal description, one can acquire a mental picture of the circuit being described. This verbal description can then be represented by a drawing of three cells and three light bulbs connected by wires.
What is the effect of changing the wire in a circuit?
16 Cards in this Set
| In a simple series circuit, why does the bulb light when you close the switch? | Because closing the switch completes the circuit. |
|---|---|
| What is the effect of changing the wire in a circuit from a straight thick wire to a straight thin wire? | The bulbs become dimmer. |
How is a battery represent in a circuit diagram?
Describing Circuits with Drawings A collection of cells or battery is represented by a collection of long and short parallel lines. In both cases, the long line is representative of the positive terminal of the energy source and the short line represents the negative terminal.
Which side is positive and negative on a battery circuit diagram?
A cell or battery is drawn with a long line and a shorter line. The long line is the positive side (plus is longer). The short line is the negative side (minus is shorter).
Which part of the battery is positive?
Each battery has two metal terminals. One is marked positive (+), the other negative (-). There are also positive and negative cables in the jumper cable set. The red one is positive (+), the black one is negative (-).
What happens when you connect the positive and negative ends of a battery?
The battery is a sort of pump which uses chemical energy to give a push to electrons, pushing them toward the negative terminal. If you connect one negative terminal to the next positive terminal, the second battery will give the electrons a further push in the same direction.
What color is positive and negative on a battery?
The positive (red) cable should be attached to the positive terminals on each battery. The negative (black) cable should have one end attached to the negative terminal of the dead battery, and one end grounded.
What happens if you disconnect the positive terminal?
when the positive terminal is disconnected, it will arc when it comes into contact with just about any unpainted metal part of the car. The terminal doesn’t have to touch a metal part directly, it can (and will) go through metal tools (like a spanner, screwdriver or pliers).
Do you hook up ground or positive first?
Which car battery terminal to connect first? “Positive first, then negative. When disconnecting the cables from the old battery, disconnect the negative first, then the positive. Connect the new battery in the reverse order, positive then negative.”
Do I need to disconnect both battery terminals when charging?
Always disconnect the negative (usually black) lead first and reconnect it last, otherwise you could end up getting a nasty shock when you touch the positive terminal.
Do I have to disconnect both battery terminals?
The grounded terminal should be disconnected first to ensure that a battery dead-short does not occur, should the spanner disconnecting the other one contact a nearby grounded metal part. A battery dead-short will result in short circuit currents of the order of hundreds of amperes and heavy sparks.