Science: Electrical diagrams 1 | Worksheet | PrimaryLeap.co.uk - Free Printable

I'll work through each circuit diagram to determine which ones will work and which won't, then provide the reasons.

Let me analyze each circuit:

Circuit 1:
- Has a battery (power source)
- Has a bulb (component)
- The circuit forms a complete loop from the battery, through the bulb, and back to the battery
- This is a closed/complete circuit ✓

Circuit 2:
- Has a battery
- Has a bulb
- Has a switch that is OPEN (not connected)
- Because the switch is open, electricity cannot flow through the circuit
- This is an incomplete/open circuit ✗

Circuit 3:
- Has a battery
- Has a bulb
- BUT there's a problem - the wire goes around the bulb without going THROUGH it
- The current takes the easier path and bypasses the bulb (short circuit)
- The bulb won't light up ✗

Circuit 4:
- Has a battery
- Has a component that looks like a bell or buzzer
- Forms a complete loop
- This circuit should work ✓

Circuit 5:
- Has a battery
- Has TWO bulbs in series (one after another)
- Forms a complete loop through both bulbs
- Both bulbs should light up (though they might be dimmer than if alone) ✓

Circuit 6:
- Has a battery
- Has a motor (marked with M)
- Forms a complete loop
- The motor should run ✓

Final Answer:

1. ✓ Works - Complete circuit with battery and bulb forming a closed loop

2. ✗ Won't work - Switch is open, breaking the circuit

3. ✗ Won't work - Short circuit - current bypasses the bulb

4. ✓ Works - Complete circuit with battery and bell/buzzer

5. ✓ Works - Complete circuit with battery and two bulbs in series

6. ✓ Works - Complete circuit with battery and motor