Circuits

Question 1

Series circuit

Answer 1

a circuit that has one loop and the current is the same all over. The potential difference is shared between the voltmeters

Question 2

Parallel circuit

Answer 2

a circuit where components are set up in separate loops. Current is shared between loops and the potential difference is the same across each lamp

Question 3

4 ways to increase resistance

Answer 3

Making the wire thinner
Changing to a material that is a poor conductor
Making the wire longer
Increase the temperature of the wire

Question 4

Ammeter

Answer 4

a component used to measure current in amps. Placed in series

Question 5

Voltmeter

Answer 5

a component used to measure potential difference in volts. Placed in parallel

Question 6

Ohms Law

Answer 6

the law states the relationship between current and resistance. If current increases, resistance will increase. If resistance increases, current will decrease

Question 7

Filament lamp graph

Answer 7

the p.d and current rise at the same rate stopping when the resistance is too high. non-ohmic graph.

Question 8

Filament bulb graph

Answer 8

The resistance stops current and p.d from rising at the same rate

Question 9

Fixed resistor graph

Answer 9

current and p.d rising at the same rate. Goes directly through the center point

Question 10

Diode

Answer 10

a component that allows current to only flow in one direction

Question 11

LDR (light-dependent resistor)

Answer 11

As the light intensity increases, the resistance decreases (day-time)
As the light intensity decreases, the resistance increases (night time)