EASY
12th Odisha Board
IMPORTANT
Earn 100

Explain the meaning of lagging current and leading current in case of AC.

Important Questions on Alternating Currents

EASY
12th Odisha Board
IMPORTANT
Bureau's Higher Secondary Physics Class 12>Chapter 10 - Alternating Currents>MODEL QUESTIONS>Q 24
Explain the necessity of transformer in long range transmission of power.
EASY
12th Odisha Board
IMPORTANT
Bureau's Higher Secondary Physics Class 12>Chapter 10 - Alternating Currents>MODEL QUESTIONS>Q 25
A coil having inductance of 1 H is connected to an AC source of frequency 50 Hz. What would be the inductive reactance of the coil?
EASY
12th Odisha Board
IMPORTANT
Bureau's Higher Secondary Physics Class 12>Chapter 10 - Alternating Currents>MODEL QUESTIONS>Q 26
A capacitor of capacity 5 μF is connected to an AC source of frequency 1000 Hz. What would be the capacitive reactance of the coil?
EASY
12th Odisha Board
IMPORTANT
Bureau's Higher Secondary Physics Class 12>Chapter 10 - Alternating Currents>MODEL QUESTIONS>Q 27
An Ac circuit contains an inductance of 10 H. What is the reactance of the circuit if the frequency is 50 Hz?
EASY
12th Odisha Board
IMPORTANT
Bureau's Higher Secondary Physics Class 12>Chapter 10 - Alternating Currents>MODEL QUESTIONS>Q 28
Why is long distance transmission of electric power done at high voltage and low current?
EASY
12th Odisha Board
IMPORTANT
Bureau's Higher Secondary Physics Class 12>Chapter 10 - Alternating Currents>MODEL QUESTIONS>Q 29
The primary and secondary of a transformer have 200 and 600 turns respectively. If the input voltage is 210 V, calculate the output voltage.
EASY
12th Odisha Board
IMPORTANT
Bureau's Higher Secondary Physics Class 12>Chapter 10 - Alternating Currents>MODEL QUESTIONS>Q 30
The primary and secondary of a transformer have 500 and 2000 turns respectively. If the input current is 16 A, calculate the output current.
EASY
12th Odisha Board
IMPORTANT
Bureau's Higher Secondary Physics Class 12>Chapter 10 - Alternating Currents>MODEL QUESTIONS>Q 31

Prove mathematically that the average power over a complete cycle of alternating current through an ideal inductor is zero.