6. What is the formula for power?
a) P = IV
b) P = VR
c) P = IR
d) P = V^2/R
Answer: d) P = V^2/R
7. What is the symbol for a resistor in an electrical circuit?
a) R
b) V
c) I
d) P
Answer: a) R
8. Which component stores electrical energy in an electrostatic field?
a) Inductor
b) Capacitor
c) Resistor
d) Transformer
Answer: b) Capacitor
9. What is the function of a diode in an electrical circuit?
a) To amplify signals
b) To store electrical energy
c) To rectify current
d) To control voltage
Answer: c) To rectify current
10. What is the basic unit of frequency?
a) Hertz
b) Watt
c) Volt
d) Ohm
Answer: a) Hertz
