Complete the following table by identifying the component described in the first column :

Description	Component
Gives out Heat and Light
Resistance changes as the temperature changes
Provides the push to make a current flow
Blows when the current is too high
Makes and breaks the circuit
Has less resistance on a sunny day
Adjusted to change the resistance in a circuit

 

The figure shown below is a potential divider. The potential difference across $R_1$is $8V$ Calculate the ratio of $R_1:R_2$.

In a rather complicated looking circuit, there are several lamps, LED's and LDR

For each LED decide whether or not it will light up. Mark each LED that lights up with a tick .

In a rather complicated looking circuit, there are several lamps, LED's and LDR's

For each lamp decide whether or not it will light up. Mark each Lamp that lights up with a tick .

Looking at the circuit shown in the diagram. State whether the three resistors are connected in series or parallel.