Lesson: Chapter 19 — Current Electricity

19.6. Resistors 1 of 7 Reset answers

Clear all your answers?

This erases every answer in this set and starts you again at question one. Your score will be gone.

Type these four numbers to confirm:

Those numbers don't match. Look at them again and type them.

Yes, clear Keep them

Question 1

The supply voltage is kept constant and the resistance of a circuit is increased. What happens to the current?

A The current increases B The current decreases C The current stays the same D The voltage increases

The right answer is the one marked above.

The current decreases. V = IR. Hold V constant and increase R, and I must fall.

This is the whole basis of using a resistor to control a current, and it is what the brightness activity demonstrates with a bulb.

Answer the question to continue.