- 1. Ohm's Law states that the current flowing through a conductor between two points is directly proportional to the voltage across the two points, given a constant temperature. This means that if the resistance of the conductor remains constant, the current will increase as the voltage increases, and vice versa. The relationship is represented by the formula I = V/R, where I is the current in amperes (A), V is the voltage in volts (V), and R is the resistance in ohms (Ω). Ohm's Law is a fundamental principle in electrical engineering and is essential for understanding and analyzing electrical circuits.
What is Ohm's Law?
A) Principle of magnetic induction.
B) Newton's second law of motion.
C) Relationship between voltage, current, and resistance.
D) Law of conservation of energy.
- 2. What does 'V' stand for in Ohm's Law equation?
A) Volume
B) Voltage
C) Velocity
D) Varistor
- 3. What does 'I' represent in Ohm's Law equation?
A) Impedance
B) Inductance
C) Current
D) Resistance
- 4. In Ohm's Law, what does 'R' indicate?
A) Resistor
B) Reactance
C) Resistance
D) Reluctance
- 5. If the resistance in a circuit increases, what happens to the current?
A) Decreases
B) Remains unchanged
C) Increases
D) Becomes negative
- 6. If the voltage in a circuit doubles, what will happen to the current with the same resistance?
A) Current doubles
B) Current triples
C) Current halves
D) Current stays the same
- 7. What is the unit of measurement for resistance?
A) Watt (W)
B) Ohm (Ω)
C) Ampere (A)
D) Volt (V)
- 8. Who is credited with formulating Ohm's Law?
A) Thomas Edison
B) Nikola Tesla
C) Michael Faraday
D) Georg Simon Ohm
- 9. Ohm's Law is primarily used in the field of:
A) Biology
B) Physics
C) Electrical engineering
D) Chemistry
- 10. Which component in a circuit follows Ohm's Law?
A) Resistor
B) Diode
C) Capacitor
D) Transformer
- 11. If the resistance in a circuit decreases, what happens to the current?
A) Becomes zero
B) Increases
C) Becomes negative
D) Remains the same
- 12. How can Ohm's Law be rearranged to find current (I)?
A) I = V * R
B) I = R / V
C) I = V / R
D) I = V - R
- 13. What does Ohm's Law state for a constant resistance?
A) Resistance is exponential with current.
B) Current is constant regardless of voltage.
C) Current is directly proportional to voltage.
D) Voltage is inversely proportional to current.
- 14. Which law describes the behavior of an ideal conductor?
A) Ohm's Law
B) Newton's Law of Cooling
C) Boyle's Law
D) Hooke's Law
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