P2.2 Controlling And Using Electric Currents Flashcards Preview

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Flashcards in P2.2 Controlling And Using Electric Currents Deck (12):
1

What do we use to measure voltage?

A voltmeter

2

What happens to current in a parallel circuit?
What happens to voltage?

Current remains the same and voltage is split

3

What is another name for voltage?

Potential difference

4

What is resistance measured in?

Ohms

5

What is the equation for resistance?

Potential difference/current

6

What is a thermistor?

A heat dependent resistor

7

What is a LDR

A light dependent resistor

8

What is a diode?

A resistor that only allows current to flow one way, so A.C does not work

9

Do the resistances of LDRs and thermistors go up or down as the factor increases.

The resistance decreases as the factor increases

10

What is the equation for power?

Current*potential difference

11

What do we use to measure current?

An ammeter

12

What is the equation for energy transferred?

Power * time