Which of the following is a good conductor of electricity?
Question 3
What is the potential difference across a resistor if a current of 2 amperes flows through it and the resistance is 4 ohms?
Question 4
In a parallel circuit, the potential difference across each resistor is:
Question 5
What is the function of an ammeter?
Question 6
The resistance of a wire is directly proportional to its:
Question 7
What is the purpose of the fuse in an electric circuit?
Question 8
Which of the following materials is a good insulator?
Question 9
What happens to the resistance of a conductor when its temperature increases?
Question 10
What is the formula for calculating electrical power?
Question 11
What is the SI unit of electric power?
Question 12
In a series circuit, the total resistance is:
Question 13
What is the unit of electric energy?
Question 14
The heating effect of an electric current is used in:
Question 15
What is the potential difference across a resistor if a current of 3 amperes flows through it and the resistance is 6 ohms?
Question 16
Which of the following statements about electric circuits is correct?
Question 17
What is the resistance of a conductor if a potential difference of 12 volts produces a current of 4 amperes?
Question 18
Which of the following is an example of a non-ohmic resistor?
Question 19
The unit of electric charge is the:
Question 20
What happens to the brightness of a bulb connected in a series circuit if another bulb is added in parallel to it?
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