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Resistance/Circuits MCQ 3

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Questions and Answers

What is the primary factor that determines the amount of heat produced in a conductor?

The resistance of the conductor
The power consumed by the conductor
The voltage across the conductor
The current flowing through the conductor (correct)

In a series circuit, what property remains constant at every point along the wire?

Power
Heat
Resistance
Current (correct)

What type of electrical device converts electrical potential energy to another form, such as heat?

Resistor (correct)
Capacitor
Transformer
Conductor

What happens to the size of the current at the junction entering and exiting the parallel parts of a circuit?

It remains the same (C) Signup and view all the answers

What is the SI unit for measuring resistance?

Ohm (B) Signup and view all the answers

Which of the following statements is true regarding higher voltage power lines?

They have a smaller current (D) Signup and view all the answers

What is the formula for calculating the total resistance of resistors in series?

RT = R1 + R2 (A) Signup and view all the answers

What is the formula for calculating the total resistance of resistors in parallel?

1/RT = 1/R1 + 1/R2 (A) Signup and view all the answers

What is the unit of measurement for resistivity?

ohm metre (A) Signup and view all the answers

What is the formula for calculating the potential difference of a full circuit?

V = V1 + V2 (B) Signup and view all the answers

What is the formula for calculating the current entering and leaving a point in a parallel circuit?

I = I1 + I2 (C) Signup and view all the answers