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Understanding Resistors in Electronics

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Questions and Answers

What role does a resistor play in an electrical circuit?

It has no impact on the flow of electrons

It speeds up the flow of electrons

It increases the flow of electrons by adding resistance

It reduces the flow of electrons by adding resistance (correct)

How does a resistor protect an LED connected to a 9 volt battery?

By limiting the current of electrons flowing through the LED (correct)

By increasing the voltage across the LED

By increasing the flow of electrons through the LED

By decreasing the resistance in the circuit

How does the resistor remove energy from an electrical circuit to protect components?

By increasing the electrical energy in the circuit

By converting electrical energy into heat (correct)

By redirecting electrical energy to other components

By converting electrical energy into light

Why is it incorrect to think of a resistor in an electrical circuit as acting like a speed bump?

Because resistors actually limit the flow of electrons constantly Signup and view all the answers

How does the resistance added by a resistor impact electron flow in a circuit?

It restricts the flow of electrons and limits the current Signup and view all the answers

Why is comparing a resistor to a speed bump inaccurate in understanding its function in a circuit?

Because speed bumps do not allow continuous flow, while resistors do limit continuous flow Signup and view all the answers

What converts kinetic energy into heat in resistors?

Collisions Signup and view all the answers

Which type of resistor is directly soldered onto metal pads on a circuit board?

SMD resistor Signup and view all the answers

What do coloured stripes on resistors indicate?

Resistance value Signup and view all the answers

Which type of resistor is used for calibration of circuits?

Rheostat Signup and view all the answers

What happens when a resistor fails to dissipate sufficient heat?

The protective layer catches fire Signup and view all the answers

Which type of resistors are used for compact circuit boards?

SMD resistors Signup and view all the answers