Question 1 of 15
What is the SI unit of electric current?
Electric current is defined as the rate of flow of charge, measured in Amperes.
Question 2 of 15
Which law states that the current through a conductor between two points is directly proportional to the voltage across the two points?
Ohm's Law: V = IR, voltage is directly proportional to current.
Question 3 of 15
What is the unit of electrical resistance?
Resistance opposes the flow of current and is measured in Ohms.
Question 4 of 15
Which of the following is the formula for calculating electrical power (P)?
Power is the product of voltage and current (P = VI).
Question 5 of 15
What is the relationship between voltage, current, and resistance in a circuit?
Ohm's Law describes the relationship: V = IR
Question 6 of 15
What is the function of a fuse in an electrical circuit?
Fuses protect circuits by breaking the circuit when current exceeds a specific value.
Question 7 of 15
What is the SI unit of electric charge?
Electric charge is measured in Coulombs.
Question 8 of 15
What is the purpose of a capacitor in a circuit?
Capacitors store energy in the form of an electric field.
Question 9 of 15
What is the function of an inductor in an AC circuit?
Inductors store energy in a magnetic field when current passes through them.
Question 10 of 15
Which of the following is a good conductor of electricity?
Copper has a low resistance to electric current.
Question 11 of 15
In a series circuit, what is constant across all components?
In a series circuit, the same current flows through all components.
Question 12 of 15
In a parallel circuit, what is constant across all components?
In a parallel circuit, each component experiences the same voltage.
Question 13 of 15
What is the property of a material that opposes the flow of electric current?
Resistance is the opposition to current flow.
Question 14 of 15
What is the reciprocal of resistance?
Conductance is the reciprocal of resistance, measuring how easily current flows.
Question 15 of 15
What is the equivalent resistance of two resistors, R1 and R2, connected in series?
In a series circuit, resistances add up: R_eq = R1 + R2.
1 / 15
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