Inductor and Magnetism Quiz Part 2

What is an inductor made of?

• A resistor

• A battery

• Conducting wire wound in a coil

• A metal plate

What type of core material has the highest inductance?

• Air core

• Iron core

• Plastic core

• Wood core

What happens to inductance when the number of turns in the coil increases?

• Inductance decreases

• Inductance increases

• Inductance becomes zero

• Inductance stays the same

What is the unit of inductance?

• Volt

• Ampere

• Ohm

• Henry

What does the symbol 'L' represent in the inductance formula?

• Voltage across the coil

• Inductance of the coil

• Length of the coil

• Current through the coil

What is the effect of increasing the coil area on inductance?

• Inductance remains unchanged

• Inductance decreases

• Inductance increases

• Inductance becomes negative

What is the formula for calculating induced e.m.f.?

• E = L × I

• E = V × I

• E = dΦ/dt

• E = I × R

If a coil has 200 turns and a change of flux of 25 mWb in 50 ms, what are we calculating?

• Capacitance

• Inductance

• Induced e.m.f.

• Resistance

In a series inductor circuit, how is total inductance calculated?

• LT = L1 - L2

• LT = L1 / L2

• LT = L1 + L2 + L3

• LT = L1 × L2

What is the total inductance in a parallel inductor circuit?

• LT = L1 - L2

• LT = L1 × L2 × L3

• LT = 1 / (1/L1 + 1/L2 + 1/L3)

• LT = L1 + L2 + L3