Questions.
Question 1.
Question 2.
Question 3.
Question 4.
Question 5.
Answers.
- a – equate F = qVB = mv^(2)/r
- b – Step up increases the voltage, it has more coils due to V primary/ V secondary = N primary / N secondary
- d – a decrease in back emf due to less change in flux increases the net voltage. Net voltage = voltage supplied – back emf
- b – An emf is induced which opposes the downward motion of the magnet – slowing it down according to lenz’s law
- a & c – magnetic break uses Eddy currents to slow it down. Induction cooktop uses eddy currents to transfer heat
