Unit 2.1

How should two resistors be connected in order to have an equivalent resistance that is BIGGER than the resistance of any of those two resistors?

• In parallel

• In series

• Both arrangements can give this type of equivalent resistance

• None of these arrangements will give this type of equivalent resistance

Three resistors of 80, 40 and 40 Ω are connected in parallel. What would the equivalent resistance of the circuit be?

How should two resistors be connected in order to have an equivalent resistance that is SMALLER than the resistance of any of those two resistors?

• In parallel

• In series

• Both arrangements can give this type of equivalent resistance

• None of these arrangements will give this type of equivalent resistance

Three resistors of 4, 9 and 11 Ω are connected in series to a battery of 36 V. Calculate the current.

When a set of resistors are connected in series, the _____ is constant, but the _____ is divided among the resistors.

• Current, voltage

• Voltage, current

• Voltage, power

• Resistance, current

Calculate the equivalent resistance of the following circuit.

From the previous circuit, calculate the current.

The following type of movement involves a body moving without increasing or decreasing a lineal speed.

• Uniform Accelerated Motion

• Uniform Rectilinear Accelerated Motion

• Uniform Rectilinear Motion

• Uniform Circular Motion

How long does it take for an object that moves at constant 45 m/s to travel 675 m? Give your answer in seconds.

Which of the following is not a vector?

• Distance

• Displacement

• Velocity

• Acceleration