A
B
C
D
Text Solution
Verified by Experts
The correct Answer is:
Topper's Solved these Questions
Similar Questions
Explore conceptually related problems
TARGET PUBLICATION-ELECTROMAGNETIC INDUCTION-COMPETITIVE THINKING
- An e.m.f. of 5 "volt" is produced by a self-inductance, when the curre...
Text Solution
|
- A varying current in a coil change from 10A to 0A in 0.5 sec. If the a...
Text Solution
|
- In a coil, L=5H, current changes at the rate of 2 ampere per second. ...
Text Solution
|
- the inductance of a closed-packed coil of 400 turns is 8mH. A current ...
Text Solution
|
- A long solenoid has 500 turns. When a current of 2A is passed through ...
Text Solution
|
- A long solenoid has 1000 turns. When a current of 4A flows through it,...
Text Solution
|
- The current passing through a choke coil of 5 hery is decreasing at th...
Text Solution
|
- If a current of 10 A flows in one second through a coil and the induce...
Text Solution
|
- An average induced e.m.f. of 1V appears in a coil when the current in ...
Text Solution
|
- Two coils have a mutual inductance of 0.005 H. the current changes in ...
Text Solution
|
- Two coils P and Q are kept near each other. When no current flows ...
Text Solution
|
- A 100 Omega resistance and a capacitor of 100 Omega reactance are conn...
Text Solution
|
- The output power in step-up transformer used in practice is
Text Solution
|
- What is increase in step-down transformer?
Text Solution
|
- A transformer is used to light a 100 W and 110 V lamp from a 220V main...
Text Solution
|
- An ideal transformer converts 220V a.c. to 3.3kV a.c. to transmit a po...
Text Solution
|
- A transformer connected to 220 volt line shows an output of 2A at 1100...
Text Solution
|
- A 220 V input is supplied to a transformer. The output circuit draws a...
Text Solution
|
- A transformer has an efficiency of 80%. It works at 4 kW and 100 V. If...
Text Solution
|
- Assertion : A transformer cannot work on dc supply. Reason : dc chan...
Text Solution
|