Electricity

31. Which of the following is the correct symbol for electric charge?

a) R

b) V

c) I

d) Q

32. If the resistance of a circuit is halved while the voltage remains the same, what happens to the current?

a) It doubles

b) It halves

c) It remains the same

d) It is impossible to determine

33. What is the resistance of a circuit if the voltage is 18V and the current is 3A?

a) 6Ω

b) 54Ω

c) 9Ω

d) 36Ω

34. Which of the following is the correct symbol for electric energy?

a) R

b) V

c) I

d) W

35. If the voltage across a circuit is doubled while the resistance remains the same, what happens to the current?

a) It doubles

b) It halves

c) It remains the same

d) It is impossible to determine