1) An incomplete circuit2) Faulty bulb or batteries3) A non conducting material is used to connect the appliances
Explanation:
1) may the key is opened .2) the positive and negative terminal are not correctly connected
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Verified answer
1) An incomplete circuit
2) Faulty bulb or batteries
3) A non conducting material is used to connect the appliances
Explanation:
1) may the key is opened .2) the positive and negative terminal are not correctly connected