26. If the voltage across a circuit is halved 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
Answer: b) It halves
27. What is the resistance of a circuit if the voltage is 24V and the current is 2A?
a) 12Ω
b) 48Ω
c) 6Ω
d) 8Ω
Answer: a) 12Ω
28. Which of the following is the correct symbol for electric power?
a) R
b) V
c) I
d) P
Answer: d) P
29. If the current in a circuit is doubled while the voltage remains the same, what happens to the resistance?
a) It doubles
b) It halves
c) It remains the same
d) It is impossible to determine
Answer: c) It remains the same
30. What is the voltage across a circuit if the resistance is 2Ω and the current is 4A?
a) 8V
b) 2V
c) 6V
d) 16V
Answer: c) 6V
