Test: Coils Connected in Series - Electrical Engineering (EE) MCQ

When inductances are connected in series, the equivalent inductance is equal to the sum of all the individual inductance values.

When inductances are connected in series, the equivalent inductance is equal to the sum of all the individual inductance values. Hence the equivalent inductance is greater than the largest individual inductance.

When inductances are connected in series, the equivalent inductance is equal to the sum of all the individual inductance values.
Hence Leq= L1+L2+L3= 12H.

 The 4 inductors are connected in series, hence their equivalent inductance is:
Leq=L1+L2+L3+L4=44H.

In a series circuit, the current across all elements remain the same and the total voltage of the circuit is the sum of the voltages across all the elements.

Since the two bulbs are connected in series, if the first bulb burns out there is a break in the circuit and hence the second bulb does not glow.

 V=IXL hence voltage is proportional to the value of the inductive impedance which is proportional to the inductance. Thus voltage is proportional to the inductance.

A short is just a wire. The potential difference between two points of a wire is zero hence the voltage measured is equal to zero.

In a series circuit, the current across all elements remain the same and the total voltage of the circuit is the sum of the voltages across all the elements.

 Batteries are generally connected in series so that we can obtain the desired voltage since voltages add up once they are connected in series.