Explanation:
The answer for the first question is number 4, an open cicuit.
For the second question number 1, an electricity.
For the third quetsion number 2, a circuit
For the fourth question number 7, a series circuit
For the fifth question number 8, a paraller circuit
For the sixth question number 5, a resistor
For the seventh question number 3, a closed circuit
For the eighth question number 6, a switch