Welcome to EsoBook!
Free Call 687 95 95 55

#### Technology 1-2 ESO – Unit 10 ELECTRICAL CIRCUITS extra activities

a)  Name the electrical elements in this circuit.

b)  Is this a parallel or a series circuit? Why?

c)  Draw the circuit diagram.

d)  If we open switch 1, what happens to light bulb 1?

e) If only switch 2 is closed. Will light bulb 2 shine more? Why?

f)  If only switch 2 is closed. Is there a risk of light bulb 2 blowing? Why?

g)  Is this a parallel or a series circuit? Why?

2 –  Match the magnitude name with its magnitude symbol, unit name and unit symbol:

 MAGNITUDE NAME MAGNITUDE SYMBOL UNIT NAME UNIT SYMBOL Current (the flow of electrons) V ohm A Tension (the force that pushes the electrons) R amp V Resistance I volt Ω

3 –  Look at the table and fill in the gaps:

 Current Intensity (I) Tension (also called Voltage) (V) Resistance (R) a) ? 12 V 4 Ω b) 4 A ? 5 Ω c) 2 A 36 V ? d) ? 8 V 8 Ω e) 1.5 A ? 10 Ω f) 4.6 A 9.2 V ?

4 –  A circuit has a battery that provides a tension of 12 V. The circuit has a light bulb with a resistance of 6 Ω

What is the current intensity in the circuit?

5 –  A circuit has a battery that provides a tension of 12 V. The current intensity in the circuit is 2 A.

What is the resistance in the circuit?