Questions
A solenoid is 1.5 m long and its inner diameter is 4.0 cm. It has three layers of windings of 1000 turns each and carries a current of 2.0 amperes. The magnetic flux for a cross-section of the solenoid is nearly
detailed solution
Correct option is B
ϕ=μ0niA=4π×10−7×30001.5×2×π2×10−22=6.31×10−6WbTalk to our academic expert!
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A square wire loop, of side a has a long straight wire carrying a constant current i that passes through the centre of the loop and perpendicular to its plane as shown in Fig.
The current induced in the square loop is
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