electricity Flashcards

You may prefer our related Brainscape-certified flashcards:
1
Q

definition of electric current

A

The rate of flow of electric charges

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

what is E.M.F?

A

It is the energy given by the electrical source to drive a unit of electric charge around a complete circuit.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

what is P.D?

A

t is the energy given by the electrical source to drive a unit of electric charge through the electrical component

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

definition of resistance

A

It is the ratio of the p.d across it to the current flowing through

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

what does a resistor do?

A

converts electrical energy to heat energy

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

what does a variable resistor do?

A

changes the current in the circuit by controlling the resistance.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

ammeter, series or parallel?

A

series

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

voltmeter, series or parallel?

A

parallel

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

basic formula is…

A

V=IR

How well did you know this?
1
Not at all
2
3
4
5
Perfectly