TS EAMCET · Physics · Magnetic Effects of Current
If the number of turns per unit length of a solenoid is doubled, what happens to the magnetic field in the solenoid?
- A It remains unchanged
- B It becomes half
- C It doubles
- D It quadruples
Answer & Solution
Correct Answer
(C) It doubles
Step-by-step Solution
Detailed explanation
The formula of the strength of magnetic field due to current carrying solenoid in terms of current and number of turns per unit length is, B=μ0ni, here n is defined as, Nl, here N is the number of turns, if we double the number of turns of solenoid then the strength of the…
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