Physics - Electricity

Question 1

What are the 4 main com ponents of a series circut

Answer 1

Cell
Lamp
Open switch
Closed switch

Question 2

What happens if you open and close a swich

Answer 2

Closed - If closed then electrons can pass through the circuit

Open- If open then electrons cant pass through the circuit

Question 3

Whats it called when electrons are passed through the circuit

Answer 3

Its called an electrical current

Question 4

Where does the current flow

Answer 4

Negitive —-> positive

Question 5

What are electrons charge

Answer 5

Negetive

Question 6

Where does lamp energy tranfer into

Answer 6

Light + thermal energy

Question 7

What happens to the electrons when they return to the positive

Answer 7

They cary less energy than they did at the negetive end

Question 8

What does “<” mean on the circuit

Answer 8

It means the current is flowing left and its called conventional energy

Question 9

What does “>” mean on a circuit

Answer 9

It means the current is flowing right - Electrical current

Question 10

What are the units measured in

Answer 10

Ampere - Amps - (A)

Question 11

Whats the current in a series circuit

Answer 11

Same all round

Question 12

What are parrelel circuits

Answer 12

The contain branches

Question 13

What does the current do when it hits the branches

Answer 13

Some of the current go through the branches - Its shared

Question 14

If theres 0.5 A leaving the cell and In the branch Zs lamp is carrying 0.3 Ampere whats Branch Cs lamp carring

Answer 14

0.2 A

Question 15

Whats potential difference

Answer 15

A PD of 1 V shows that theres 1 joul of energy is tranferred for each coulomb of charge thats moving through the circuit

Question 16

Whats a volt meter

Answer 16

It mesures the PD in a circuit

—-V—–

Question 17

If theres 9V in the cell voltmeter then will two lamps have the same volts and will they be bright or dimm

Answer 17

They will have different volts as 9V is being shared between them and they would be dimmer than 9V