Current test Flashcards

1
Q

Whats the description of what voltage quantity is and its symbol and units?

A

A measure of how much energy the current has. SYMBOL: V volts voltmeter

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2
Q

Whats the description of the current quantity is and the symbol and units.

A

A measure of how many electrons pass a point in a circuit. SYMBOL: i UNITS: A amps ammeter

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3
Q

THE description of what the resistance quantity is . and rhe synbol and units

A

A measure of how much the current has been impeded. SYMBOL: R UNITS: 0 Ohms ohmeter

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4
Q

How are ammeters connected in a circuit? (series or parallel)

A

SERIES

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5
Q

When you charge your phone, the charging clock gets warm, why does thjs happen?

A

The resistance in the charger creates heat

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6
Q

How do fuses and circuit breakers protect our homes from electrical fires?

A

Fuses and circuit breakers are made to break the circuit if they sense that too much current is being drawn preventing fires

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7
Q

If when you plug in an old string of decorative lights connected in series, non of the bulbs light, does this mean all the bulbs burnt out?

A

the bukbs are probably not ALL burnt out because , if one bulb goes out ina. series, all the rest does too.

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8
Q

How do you know that the lifhts in your house are wired in parallel?

A

I know that the lights in my house are parallel because if i turn off one light , the rest of the lights remain lited up.

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9
Q

What happens to the current in a circuit if more resistors are added?

A

When more resistors are added, the chreent in a circuit DECREASES.

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